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  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Ontology of Archeology: Artifacts, CIDOC-CRM and BFO</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Fumiaki Toyoshima</string-name>
          <email>fumiaki.toyoshima@unine.ch</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Géraldine Delley</string-name>
          <email>geraldine.delley@unine.ch</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>archeology</institution>
          ,
          <addr-line>ontological realism, artifact, CIDOC Conceptual Reference Model (CIDOC-CRM), Basic Formal</addr-line>
        </aff>
      </contrib-group>
      <pub-date>
        <year>2068</year>
      </pub-date>
      <fpage>8</fpage>
      <lpage>9</lpage>
      <abstract>
        <p>Archeology faces a critical issue of how to structure and reuse a rapidly increasing amount of archeological data and information. Ontologies are expected to address this problem by serving as a common semantic basis for their efective management. This paper aims to take the initial steps towards an ontology of archeology that is underpinned by the methodological principle for ontology development which is called “(ontological) realism”. For this purpose, we focus on artifacts in archeology and provide an ontological analysis of an artifact-relevant modular part of the CIDOC Conceptual Reference Model (CIDOC-CRM), based on the realism-based upper ontology Basic Formal Ontology (BFO). We also examine CIDOC-CRM's capacity to accommodate multifarious artifacts in archeology in light of some illustrative examples thereof and propose a realism-based ontological approach to archeological artifacts in general.</p>
      </abstract>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <p>Archeological studies undergo dramatic methodological changes with the advent of information
technology in the digital age [1]. At the same time, it is an acute problem to structure, repurpose and
reuse a proliferating amount of digital data in archeology [2, 3]. Ontologies attract growing research
interest in this context, as they are expected to meet such a significant challenge by ensuring the
semantic interoperability among diferent heterogeneous information resources in archeology [ 3], or
more generally, in the domain of cultural heritage [4]. As a matter of fact, an ontological approach
to archeological data has been theoretically and practically explored, for example when it comes to
formally representing archeological sites [5, 6] and archeological artifacts [7, 8] in information systems.</p>
      <p>In this paper we put forward the idea that the development of ontologies of archeology can be
potentially fostered with recourse to the methodological principle of ontology development which is
called “(ontological) realism” or the “realist methodology” [9]. The “fundamental principle of ontological
realism” is “to view ontologies as representations of the reality that is described by science” (ibid., p.
139, de-italicized for readability). The eficacy of ontological realism can be observed in the fact that
this methodology is adopted by the upper ontology Basic Formal Ontology (BFO) [10, 11, 12] and BFO
has been widely used in many domains such as biomedicine (notably in connection with the Open
Biological and Biomedical Ontologies (OBO) Foundry [13, 14]) and intelligence analysis [15].</p>
      <p>There are arguably several reasons for accepting ontological realism in the building of ontologies
of archeology. For one thing, the full deployment of archeological ontologies will warrant grounding
them in a solid theoretical basis [16]. There is efectively heightened awareness of the importance of
a foundational analysis of archeological ontologies. For instance, the CIDOC Conceptual Reference
Proceedings of the Joint Ontology Workshops (JOWO) - Episode XI: The Sicilian Summer under the Etna, co-located with the 15th</p>
      <p>CEUR
Workshop</p>
      <p>ISSN1613-0073</p>
      <p>Model (CIDOC-CRM) is a standardly used ontology for representing information about cultural heritage
[4, 17] and it has been utilized e.g., in historical research [18] and archeology [3, 24].</p>
      <p>It has been nonetheless highlighted that the foundation of CIDOC-CRM requires strengthening from
logical [19] and ontological [20] viewpoints, as well as extending [18] by means of upper ontologies such
as the Descriptive Ontology for Linguistic and Cognitive Engineering [21, 22]. Relatedly, an ontology
of artifacts in Islamic archeology has been developed in alignment with DOLCE [8]. As BFO has been
recently approved as international standard ISO/IEC 21838-2, the realist methodology — as embraced
paradigmatically by BFO — can be expected to contribute to solidifying a theoretical foundation of
archeological ontologies.</p>
      <p>For another, ontological realism may be helpful in facilitating the reusability of archeological data.
According to Huggett [2], relevant questions to digital data reuse in archeology include: “What are the
implications of the diferent epistemologies associated with data analytics applied to archaeological
data?” and “What mechanisms need to be put in place to support appropriate reuse of archaeological
data?” (ibid., p. 101). In reply to these two questions, we think that the reuse of archeological data can
be severely hindered by “diferent epistemological frameworks” (ibid., p. 99) for data analytics and
ontological realism has the potential to enhance their reusability because it can serve as a common semantic
framework for integrating these “data epistemologies” (ibid.). Moreover, the realist methodology may
also be an efective tool for developing an inter- and transdisciplinary framework for archeology [ 23],
as ontologies can be useful to establish it [24], while emphasizing that the context of discovery — which
determines how a set of objects may be interpreted archeologically — is fundamental to archeological
practice and theorizing, and it underscores the importance of fields in archaeology [ 25].</p>
      <p>More concretely, we will illustrate the potential utility of ontological realism for the development of
ontologies of archeology with the example of artifacts, as they are of central importance in archeology.
First of all, we provide an ontological analysis of an artifact-related modular part of CIDOC-CRM
within BFO’s realism-based ontological framework (Section 2). Next, we clarify the limited scope of
the CIDOC-CRM notion of artifact in terms of some examples of artifacts in archeology and propose a
realism-based ontological approach to archeological artifacts in general (Section 3). Then, we discuss
our findings in relation with related work (Section 4). Finally, we conclude the paper with some brief
remarks on future work (Section 5).</p>
    </sec>
    <sec id="sec-2">
      <title>2. An ontological analysis of artifacts in CIDOC-CRM</title>
      <sec id="sec-2-1">
        <title>2.1. Artifacts in the CIDOC Conceptual Reference Model (CIDOC-CRM)</title>
        <p>We will begin by adumbrating an artifact-related modular part of CIDOC-CRM. As there is no such
explicit class as Artifact in CIDOC-CRM, we will focus on the following three classes thereof: E22
Human-Made Object, E24 Physical Human-Made Thing and E25 Human-Made Feature (where each class
in CIDOC-CRM is prefixed by a unique ID starting with “E”). Note that we will write terms for classes
and particulars in italics and bold, respectively.</p>
        <p>We will first introduce E24 Physical Human-Made Thing because it is a superclass of E22 Human-Made
Object and E25 Human-Made Feature. This class is annotated with the following “scope note”:
This class comprises all persistent physical items of any size that are purposely created
by human activity. This class comprises, besides others, human-made objects, such as a
sword, and human-made features, such as rock art. […]
Instances of E24 Physical Human-Made Thing may be the result of modifying pre-existing
physical things, preserving larger parts or most of the original matter and structure, which
poses the question if they are new or even human-made, the respective interventions
of production made on such original material should be obvious and suficient to
regard that the product has a new, distinct identity and intended function and is human-made.
Based on this explanation, we can think that the notion of E24 physical human-made thing would
correspond approximately to the traditional view of artifact as something that is intentionally produced
for some purpose (see e.g., [26]).</p>
        <p>Next, E22 Human-Made Object is a subclass of E24 Physical Human-Made Thing and it is annotated
with the following scope note:</p>
        <p>This class comprises all persistent physical objects of any size that are purposely created
by human activity and have physical boundaries that separate them completely in an
objective way from other objects.</p>
        <p>The class also includes all aggregates of objects made for functional purposes of whatever
kind, independent of physical coherence, such as a set of chessmen.
Listed examples of E22 human-made objects include the Rosetta Stone and the Portland Vase. We remark
that not only objects but also aggregates of objects can be instances of E22 Human-Made Object (see
Section 2.3 for details).</p>
        <p>Finally, being another subclass of E24 Physical Human-Made Thing, E25 Human-Made Feature is
annotated with the following scope note:</p>
        <p>This class comprises physical features that are purposely created by human activity, such
as scratches, artificial caves, artificial water channels, etc. In particular, it includes the
information encoding features on mechanical or digital carriers. [17, p. 75]
Listed examples of E25 human-made features include the Manchester Ship Canal and the carved letters
on the Rosetta Stone. We emphasize that not only physical features but also “non-physical” entities
(e.g., information) relating to these physical features can be instances of E25 Human-Made Feature (see
Section 2.3 for details).</p>
      </sec>
      <sec id="sec-2-2">
        <title>2.2. A general overview of Basic Formal Ontology (BFO)</title>
        <p>We will explain selected categories from Basic Formal Ontology (BFO) [10, 11, 12], as a preliminary to
providing a BFO-based analysis of artifacts in CIDOC-CRM in Section 2.3. Figure 1 represents BFO’s
is_a hierarchy under the ISO standard. BFO includes the top-level distinction between continuants
(which persist through time) and occurrents (which unfold themselves in time).</p>
        <p>In the category of continuant, independent continuants include material entities such as cells and
people. They also include immaterial entities, such as sites and continuant fiat boundaries. A site in
BFO is: “An immaterial entity in which objects such as molecules of air or organisms can be contained”
[10, p. 184]. Examples include my nasal cavity and the hold of a ship. A continuant fiat boundary in
BFO is: “An immaterial entity that is of zero, one, or two dimensions and does not include a spatial
region as part” [10, p. 108, italics omitted] (see [28] for more thoughts). Examples include fiat surfaces
(e.g., the surface of the earth) and fiat lines (e.g., the Greenwich meridian).</p>
        <p>A generically dependent continuant is a continuant that depends (existentially) on one or other
independent continuant and can “migrate” from one bearer to another through a process of copying.
Intuitively speaking, it is a “copyable pattern”. Examples include pdf files (which can be moved from
one storage device to another) and novels (which can have multiple printed copies).</p>
        <p>A specifically dependent continuant is a continuant that depends (existentially) on at least one
independent continuant. Examples include qualities (e.g., my height) and realizable entities such as
dispositions, functions and roles (see e.g., [29] for more thoughts on realizable entities in BFO).</p>
        <p>A disposition in BFO is a realizable entity that exists because of certain features of the physical
makeup of the independent continuant that is its bearer. It is an “internally grounded realizable entity”:
if a BFO:disposition ceases to exist, then the physical makeup of the bearer is changed. Examples
include the fragility of a glass and the flammability of a match.</p>
        <p>A function in BFO is a BFO:disposition of a bearer with a specific kind of historical development
[11]. It is a BFO:disposition that its bearer possesses in virtue of its having a certain physical makeup
because of how it came into being, either through evolution (when the bearer is a natural biological
entity) or intentional design (when the bearer is an artifact). Examples include the function of the heart
to pump blood through the body and the function of a screwdriver to turn screws.</p>
        <p>
          A role in BFO is a realizable entity that (
          <xref ref-type="bibr" rid="ref1">1</xref>
          ) exists because the bearer is in some special physical, social,
or institutional set of circumstances in which the bearer does not have to be (optionality), and (
          <xref ref-type="bibr" rid="ref2">2</xref>
          ) is not
such that, if this realizable entity ceases to exist, then the physical make-up of the bearer is thereby
changed (external grounding). Briefly, a BFO:role is an externally grounded and optional realizable
entity. Examples include the role of being a student and the role by a stone of marking a boundary.
        </p>
        <p>In the category of occurrent, a process in an occurrent that exists in time by occurring, i.e., by having
(proper) temporal parts, and which depends on at least one independent continuant as participant.
Examples include a process of cell division and a process of my cutting meat with a knife.</p>
      </sec>
      <sec id="sec-2-3">
        <title>2.3. A BFO-based analysis of artifacts in CIDOC-CRM</title>
        <p>We will now analyze, from BFO’s realism-based viewpoint, the three artifact-relevant classes in
CIDOCCRM, viz. E24 Physical Human-Made Thing, E22 Human-Made Object and E25 Human-Made Feature.
First of all, in considering E24 Physical Human-Made Thing against the BFO ontological background,
one might hypothesize that this class can be understood as a subclass of BFO:Material entity because
E24 physically human-made things are “persistent physical items of any size”, and BFO:material entities
are spatially extended in three dimensions and continue to exist through some interval of time [10, p.
90]. One might also hypothesize that E24 Physical Human-Made Thing can be linked with BFO:Function
because any E24 physically human-made thing has “a new, distinct identity and intended function and
is human-made” and, when it is an artifact, the bearer of a BFO:function come into being — which
would entail distinct identity — through intentional design [11].</p>
        <p>These two hypotheses on E24 Physical Human-Made Thing are nonetheless arguably untenable when
we closely examine its subclasses E22 Human-Made Object and E25 Human-Made Feature. Concerning
the first hypothesis, it may certainly apply to E22 Human-Made Object because this class covers some
BFO:objects (e.g., the Rosetta Stone) and some BFO:object aggregates (e.g., a set of chessmen), and
BFO:Object and BFO:Object aggregate are subclasses of BFO:Material entity.</p>
        <p>As regards E25 Human-Made Feature, however, this class accommodates some BFO:sites (e.g., artificial
caves) and some BFO:fiat surfaces (e.g., scratches), but BFO: Site and BFO:Fiat surface are subclasses
of BFO:Immaterial entity — which is disjoint from BFO:Material entity. Moreover, E25 Human-Made
Feature includes “information encoding [physical] features on mechanical or digital carriers” and such
an informational entity can fall under BFO:Generically dependent continuant (disjoint from BFO:Material
entity), or more specifically, under Information content entity — which is a subclass thereof in the
BFO-compliant Information Artifact Ontology (IAO) [30].</p>
        <p>Concerning the second, related hypothesis, it is important that the bearers of BFO:functions should
be BFO:independent continuants that are not BFO:spatial regions. On the one hand, E22 Human-Made
Object may be generally characterized in terms of bearing BFO:functions because all E22 human-made
objects are BFO:material entities. On the other hand, E25 human-made features that are BFO:sites or
BFO:fiat surfaces may be characterized in terms of bearing BFO:functions (but see [ 31] for the view
that the current BFO specifications of dispositions and roles should be generalized to apply to e.g.,
sites), whereas those which are IAO:information content entities cannot be, because BFO:Generically
dependent continuant is disjoint from BFO:Independent continuant.</p>
        <p>All these discussions can show that the artifact-relevant classes in CIDOC-CRM are categorically
heterogeneous with interpreted in the BFO ontological setting. In particular, E24 Physical Human-Made
Thing includes not only some BFO:material entities but also some BFO:immaterial entities and even
some BFO:generically dependent continuants. In our view, this is partly because the notion of being
human-made is ontologically prior to the notion of being ontologically (in)dependent in CIDOC-ROM
(which is tailored to meet the needs in cultural heritage), while the latter notion is rather ontologically
prior to the former in BFO (which is a domain-neutral ontology that is predicated on ontological
realism).</p>
      </sec>
    </sec>
    <sec id="sec-3">
      <title>3. Towards a realism-based ontology of archeological artifacts</title>
      <p>We will investigate the utility of the CIDOC-CRM notion of artifact in the domain of archeology by
scrutinizing the aforementioned artifact-related classes in this ontology in light of some examples of
artifacts in archeology that are extracted from the publication [32].1</p>
      <p>On the one hand, some archeological artifacts can be understood in terms of E24 Physical
HumanMade Thing and its subclasses. To illustrate this point, consider a blade (blade1) out of flint stone in
Figure 2 (see [32, pp. 94-103] for details). Then blade1 can be seen as an instance of E22 Human-Made
Object, as it is an BFO:object that is intentionally produced to cut something. For that matter, we can
think that blade1 has a BFO:function to cut. For another example, the Etruscan Necropolis of Cerveteri
and Tarquinia may be considered as an instance of E25 Human-Made Feature, as it would be classied as
a BFO:site that is intentionally produced to bury dead people. In efect, we may think that the Etruscan
Necropolis has a BFO:function to bury dead people.</p>
      <p>On the other hand, some archeological artifacts may be dificult to classify according to the
artifactrelevant classes in CIDOC-CRM. For instance, consider an aggregate of approximately 500 small objects
in Figure 3 (see [32, pp. 348-351] for details). They were discovered in the same archeological site,
near the entrance of the Roman forum of Aventicum, Switzerland in 2003, and they vary greatly in
size, material and color. According to one archeological interpretation, this aggregate of small objects
(object aggregate2) were deposited or abandoned, intentionally by diferent people, in order to bring
luck.</p>
      <p>It may be unclear whether object aggregate2 is an instance of E22 Human-Made Object or not, even
though it may be an BFO:object aggregate. For one thing, it may not be intuitive to say that object
1The publication [32] was issued on the occasion of the exhibition Des choses at the Laténium, located in Neuchâtel, Switzerland,
held from May 28, 2021, to January 9, 2022. This exhibition focused on unique objects that remain underexplored within the
traditional research framework for understanding archeological objects.
aggregate2 is “human-made” through the intentional act of depositing or abandoning them (which
would not involve substantial physical modification) and it had an “intended function” to bring luck.
For another, object aggregate2 could have no BFO:function to bring luck, as BFO:Function is a subclass
of BFO:Disposition — which exists because of certain features of the physical makeup of the bearer —–
but, given (our knowledge of) the laws of nature of our actual world, there can be no physical entity to
bring luck (see [33, 34, 35] for related thoughts on artifactual functions).</p>
      <p>To borrow another example, a fragment of Roman terracotta slab in Figure 4 was discovered in</p>
      <p>Avenches, Switzerland and it contains a child’s footprint (footprint3) (see [32, pp. 374-377] for details).
In general, footprints are of archeological value because they help to explore the culture and lifestyle at
that time: for instance, the itineraries of people from that time and whether they used to walk barefoot
or wear shoes. In our case, footprint3 attests to the presence of children at what were likely accessible
production sites, such as terracotta workshops during the Roman period. Even if it could be construed
as a BFO:fiat surface, footprint3 would not be an instance of E25 Human-Made Feature, as it was
accidentally (and hence not purposely) left on the surface of the clay slab — which is a BFO:material
entity that was intentionally produced, e.g., to cover the floor of a building. Moreover, it would be
implausible to identify any BFO:functions of footprint3.</p>
      <p>These case studies can prompt the need for an alternative approach to artifacts in archeology beyond
CIDOC-CRM. We propose that a realism-based account of archeological artifacts can be a promising
candidate for such an approach. To outline this proposal, we will provide a brief BFO-based analysis of
the two problematic examples of archeological artifacts, i.e., object aggregate2 and footprint3.</p>
      <p>Regarding object aggregate2, it can be interpreted as a “faith-based artifact” by Koslicki &amp; Massin
[34]: roughly, an artifact of a kind that is intended and believed by its creators and users to perform a
function (e.g., to bring luck) which it in fact does not perform. They also suggest that faith-based artifacts
can be analyzed in terms of their notion of “placebo capacity”: roughly, a capacity to subjectively satisfy
an agent’s desire to produce the relevant efect (e.g., to get lucky) in the presence of a belief by the
agent that the entity is able to bring about this efect (e.g., to bring luck). For instance, amulets can
be ascribed the placebo capacities to subjectively satisfy the user’s desire to dispel evil spirits in the
presence of the relevant belief on the part of the agent that they can in fact dispel evil spirits. Since
amulets in fact lack the capacity to dispel evil spirits, however, the user’s desire to dispel evil spirits is
only subjectively, but not objectively, satisfied. As placebo capacities can be understood as BFO:roles (as
distinct from BFO:dispositions, including BFO:functions) [33, 35], we can analyze object aggregate2 as
an BFO:object aggregate that bore a placebo capacity (which is a BFO:role) to bring luck.</p>
      <p>Regarding footprint3, by contrast, its ontological analysis would be more dificult owing to the
fact that unlike the clay slab, which had been intentionally produced, footprint3 was likely made
accidentally on its surface at a later time — a phenomenon currently under investigation. Here it may
be useful to consult Almeida &amp; Costa’s [8] DOLCE-based ontology of Islamic artifacts. They provide a
role-based approach to archeological artifacts as follows:</p>
      <p>From an ontological point of view, these categories [“some basic concepts in archaeology,
such as those of artefact and ecofact”] of archaeological data are roles assumed by material
objects. […] No object is necessarily an archaeological artefact, only becoming one under
certain conditions and for a certain period of its existence, e.g., after being recognised as an
evidence of material culture in an archaeological site. [8, pp. 296-297]
This idea can motivate us to think, along with BFO, that footprint3 is an archeological artifact in virtue
of bearing a BFO:role (role3) to serve as “an evidence of material culture in an archaeological site”. One
apparent problem with this interpretation is the unclarity of the ontological nature of role3.</p>
      <p>Although tackling this issue fully exceeds the scope of this paper, we can ofer some remarks as a
pointer to further inquiry. According to Toyoshima et al. [33, 36, 35], the term “artifact” can refer to at
least two related, but diferent kinds of entities: “canonical artifacts” and and “usefacts”. A canonical
artifact is something that is intentionally produced for some purpose (e.g., blade1 and clay slabs). A
usefact is something that is intended to be used for some accidental purpose, i.e., for some purpose that
is diferent from the purpose (if any) for which the entity was intentionally produced. For instance,
when a pebble is intended be used to keep papers in place (even without being actually used in that
way), this pebble is a usefact because it was not intentionally produced (since it is a natural object) and
it is intended to be used for some purpose. We may think that footprint3 is a usefact, as it was not
intentionally produced and it is intended to be used by contemporary archaeologists as an evidence of
material culture, and that role3 can be analyzed as a BFO:role that exists in virtue of the archaeologists’
interests in the circumstances in which the clay slab and footprint3 on it came to take shape during
the Roman period (see [33, 36, 35] for details).</p>
    </sec>
    <sec id="sec-4">
      <title>4. Discussion</title>
      <p>We dedicate part of this study to examining the application of CIDOC-CRM in archaeological contexts.
CIDOC-CRM plays a crucial role in the cultural heritage domain, as many widely adopted metadata
schemas and standards there have been mapped to entities within this ontology [37]. Moreover, previous
studies have explored the mapping of CIDOC-CRM to other metadata schemas or conceptual models —
particularly in archeology [38] — and the potential benefits of applying machine learning techniques to
CIDOC-CRM [39].</p>
      <p>Unlike these existing works, we analyzed CIDOC-CRM by delving into subclasses of E77 Persistent
Item that are relevant to archaeological artifacts within the framework of the BFO upper ontology. From
a foundational perspective, CIDOC-CRM is widely recognized as “event-centric”, with the representation
of events (as illustrated by E2 Temporal Entity) being central to its scope (see e.g., [4] for more details).
While E2 Temporal Entity — which constitutes the core dichotomy of this ontology alongside E77
Persistent Item — falls outside the purview of our investigation, a comprehensive study of relevant
subclasses of E2 Temporal Entity and relations will require first strengthening the conceptual and logical
bases for CIDOC-CRM (see e.g., [19, 20] for pointers).</p>
      <p>One example of this line of future inquiry is to focus on E11 Modification , a subclass of E2 Temporal
Entity, as well as on the relation P31 has modified , whose domain is E11 Modification — given its intimate
connection with E24 Physical Human-Made Thing, which we investigated above: “[E11 Modification ]
comprises instances of E7 Activity that are undertaken to create, alter or change instances of E24 Physical
Human-Made Thing” [17, p. 66, with italicization for readability].</p>
    </sec>
    <sec id="sec-5">
      <title>5. Conclusion</title>
      <p>The goal of this paper was to undertake a project to develop an ontology of archeology that is
theoretically anchored to the methodological principle of ontological realism. To achieve this aim, we focused
on artifacts in archeology and provided an ontological analysis of an artifact-relevant modular part
of CIDOC-CRM, in compliance with the realism-based BFO upper ontology. We also argued that the
artifact-related classes in CIDOC-CRM (to wit, E24 Physical Human-Made Thing and its subclasses) may
have dificulty with accommodating a wide variety of artifacts in archeology. Finally, we proposed and
outlined a realism-based ontological approach to archeological artifacts in general, followed by a brief
discussion in relation to related work.</p>
      <p>There are several directions of research in which to further advance the project under consideration.
One important task is, for instance, to synthesize and generalize the instance-level investigation into
archeological artifacts (as conducted in Section 3) up to the class-level. A crucial step in addressing
this task will be to develop a systematic account of artifacts and relevant realizable entities [33, 36, 35]
as well as of realizable entities in BFO (e.g., [29]), as blade1 is inextricably linked with BFO:Function
and, by contrast, object aggregate2 and footprint3 are with BFO:Role. Moreover, to fully assess the
scope and validity of this proposal, it will be necessary to examine further examples of archaeological
artifacts, such as those discussed in the publication [32].</p>
    </sec>
    <sec id="sec-6">
      <title>Acknowledgments</title>
      <p>This work is part of the project “An Ontology of Production, Products, and By-Products” (2023-2027;
grant number #212493) funded by the Swiss National Science Foundation (SNSF). FT is financially
supported by SNSF. FT’s participation in the relevant workshop is made possible by funding from the
Swiss Academy of Humanities and Social Sciences (SAHSS). The research has also been conducted in
cooperation with the Swiss Center for Ontological Research (SCOR).</p>
    </sec>
    <sec id="sec-7">
      <title>Declaration on Generative AI</title>
      <p>During the preparation of this work, the authors used ChatGPT in order to: Grammar and spelling
check, Paraphrase and reword. After using this tool/service, the authors reviewed and edited the content
as needed and take full responsibility for the publication’s content.
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