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  <front>
    <journal-meta>
      <journal-title-group>
        <journal-title>Sleep Med</journal-title>
      </journal-title-group>
      <issn pub-type="ppub">1613-0073</issn>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="doi">10.1016/j.sleep.2021.02.035</article-id>
      <title-group>
        <article-title>Explanation Patterns for The Sleep Adherence Mentor (SAM)</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Amal Abdulrahman</string-name>
          <email>amal.abdulrahman@mq.edu.au</email>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff3">3</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Deborah Richards</string-name>
          <email>deborah.richards@mq.edu.au</email>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff3">3</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Patrina Caldwell</string-name>
          <email>patrina.caldwell@sydney.edu.au</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Karen Waters</string-name>
          <email>karen.waters@health.nsw.gov.au</email>
          <xref ref-type="aff" rid="aff0">0</xref>
          <xref ref-type="aff" rid="aff1">1</xref>
          <xref ref-type="aff" rid="aff2">2</xref>
        </contrib>
        <contrib contrib-type="editor">
          <string-name>Westmead, Sydney - Australia.</string-name>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Children's Hospital at Westmead</institution>
          ,
          <addr-line>Westmead, NSW 2145</addr-line>
          ,
          <country country="AU">Australia</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Conference on Persuasive Technology</institution>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution>Discipline of Child and Adolescent Health, University of Sydney</institution>
          ,
          <addr-line>Sydney 2050</addr-line>
          ,
          <country country="AU">Australia</country>
        </aff>
        <aff id="aff3">
          <label>3</label>
          <institution>School of Computing - Faculty of Science and Engineering, Macquarie University</institution>
          ,
          <addr-line>Macquarie Park, NSW 2109</addr-line>
          ,
          <country country="AU">Australia</country>
        </aff>
      </contrib-group>
      <pub-date>
        <year>2021</year>
      </pub-date>
      <volume>81</volume>
      <issue>2021</issue>
      <fpage>327</fpage>
      <lpage>335</lpage>
      <abstract>
        <p>Sleep disorders impact more than 13% of Australian children. To provide timely advice to paediatric patients and their families, we have created a website that triages patients on the specialist waiting list to provide tailored recommended treatments. To enhance adherence, the child and their family can discuss the recommendations with the Sleep Adherence Mentor (SAM) for each treatment. Recommended treatments may include sleep diary, sleep hygiene, settling routine, cafeine, snoring, and night terrors. To personalise the discussions, the dialogues use explanation patterns where the explainable virtual agent first elicits the beliefs that act as barriers to following the treatment, the goals that are driving their behaviours and the user's information to better understanding the user context. SAM is implemented using the UNITY 3D game engine which is integrated in an authoring tool developed in our lab. Interacting with SAM is only available through the eADVICE website. We have initial feedback on the conversations and have obtained ethics approval for a pilot with 50 paediatric patients at The Children's Hospital at In: Kiemute Oyibo, Wenzhen Xu, Elna Vlahu-Gjogievska (eds.): The Adjunct Proceeding of the 19th International https://web.science.mq.edu.au/~richards/ (D. Richards) 0000-0001-5360-0833 (A. Abdulrahman); 0000-0002-7363-1511 (D. Richards); 0000-0003-1124-6578 (P. Caldwell)</p>
      </abstract>
      <kwd-group>
        <kwd>Explanation patterns</kwd>
        <kwd>Explainable virtual advisor</kwd>
        <kwd>Behaviour change</kwd>
        <kwd>Pediatric sleep disorders</kwd>
      </kwd-group>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>-</title>
      <p>CEUR
ceur-ws.org</p>
    </sec>
    <sec id="sec-2">
      <title>1. Introduction</title>
      <p>Poor sleep among children and adolescents poses a significant and widespread health challenge,
impacting around 14% to 31% of Australian children [? ? ]. Despite the prevalence of sleep
problems, the availability of clinical services is limited but due to the condition not being
life-threatening, resulting in long wait times precluding patient access and limiting the capacity
to assess patient priority. Despite its prevalence, limited clinical services and long wait times
restrict access to treatment. Sleep dificulties impact children’s well-being, quality of life, and
their families as well [? ].</p>
      <p>Sleep challenges become particularly pronounced in the early years of a child’s life, afecting
their behavioral and emotional well-being throughout the initial school years [? ? ]. The
nEvelop-O
LGOBE
implications extend into adolescence contributing to negative outcomes such as depression,
decreased academic performance, and risky behaviors like substance abuse [? ].</p>
      <p>Given the profound impacts of sleep disorders, early identification and treatment are
imperative. However, existing services face constraints, leading to delayed interventions. In 2013
alone, sleep problems among children aged up to seven years incurred costs of approximately
AU$27.5 million for the Australian Federal Government [? ]. The primary driver of these costs
is the delayed access to prompt treatment attributed to inadequate professional services catering
to the overwhelming demand for patients’ assistance. Even when medical advice is readily
available, adherence to treatment guidance, regardless of the health condition, hovers around
50%, whether delivered through human interaction or technology-mediated interventions [?
? ]. The challenge goes beyond providing timely advice. It also involves encouraging people
to follow the advice. In Australia, children’s sleep services are limited to public hospitals and
private practices. Public hospitals have long wait times, averaging eight months at The
Children’s Hospital at Westmead (CHW), for instance. Additionally, there’s a wait of nine to twelve
months for sleep studies. Therefore, initial screening is crucial to identify children who need
urgent attention [? ].</p>
      <p>Recognizing that sleep problems can stem from medical (e.g. sleep apnea) or behavioral
factors (e.g. poor sleep hygiene) [? ], this paper focuses on the latter—behavioral problems that
can be efectively treated through behavior change. To tackle these challenges, we introduce
a technology-driven solution: the Sleep Advisor Monitor (SAM) to promote health behavior
change for children with sleep disorders. Section 2 establishes a foundational context by
presenting relevant research in both psychology and human-agent interaction. Section 3
introduces the eADVICE system, which served as the platform for the proposed explainable
virtual agent (XVA) under investigation. Section 4 presents the design of the XVA, SAM,
including the treatments and the explanation patterns design. The feedback obtained from
children and parents who evaluated the system and interacted with SAM, as a first evaluation
round, is presented in Section 4. The paper concludes in Section 5.</p>
    </sec>
    <sec id="sec-3">
      <title>2. Background</title>
      <p>Technology-based interventions for health behavior change have gained significant attention in
recent years due to their ability to provide accessible support anytime, anywhere [? ? ]. These
interventions have proven to be particularly efective in enhancing adherence to the treatment
plans when they are grounded in psychological theories such as Cognitive Behavioral Therapy
[? ], social judgment theory [? ] and incorporating dialogue support [? ]. Dialogue support can
range from simple reminders to more complex conversational agents that assume a social role,
acting as coaches.</p>
      <p>In psychology, Theory of Mind (ToM) refers to the ability to understand the mental states
of others, including their beliefs and desires [? ? ]. This concept, also known as belief-desire
psychology, emphasises the significance of beliefs (what someone thinks is true) and
desires/goals (what someone wants) in explaining and predicting human behavior [? ]. Drawing from
Bratman’s model (1987), beliefs-desire-intention (BDI) agents implement ToM as means to
reason about their own behaviour or to understand other agents’ behaviour in multi-agent
environments. By explicitly representing internal beliefs, desires (goals), and intentions, BDI agents
can provide explanations for their actions, linking their decisions directly to the underlying
reasons. These explanations, known as reason explanations [? ? ], shed light on the mental
state of the agents.</p>
      <p>Previous studies have highlighted that the reception of explanations incorporating beliefs
and goals may vary depending on factors such as age (child, adult) [? ] or expertise (novice,
expert) [? ]. Building on this understanding, the integration of explanations into behavior
change interventions has emerged as an ongoing research area. The goal is to explore new and
efective ways to influence user behavior through explainable approaches.</p>
      <p>Integrating explanations into behaviour change interventions is a growing research field
that seeks new ways to efectively influence user behaviour. Explanation goes beyond simply
detailing the recommended behaviour by human or artificial coaches. It aims to elucidate the
underlying reasons behind the behavioral recommendations, thus enhancing motivation and
behaviour change [? ? ]. By providing users with insights into the algorithm’s functioning,
including its reasoning processes and decision-making mechanisms, explanations can foster
trust and transparency in the intervention and address concerns related to data privacy and
algorithmic bias [? ].</p>
      <p>Novelly, our work aims to specifically improve behavior change through explanations tailored
to the user’s beliefs and goals, rather than the agent’s. To achieve this, the present paper
investigates two key questions: firstly, it explores the design and the utilisation of explanation
patterns based on the user’s beliefs and goals. Secondly, it seeks to understand how users
perceive these patterns within the context of behaviour change.</p>
    </sec>
    <sec id="sec-4">
      <title>3. eADVICE System</title>
      <p>To address the shortage of specialist care for sleep disorders using XVA, we reengineered the
eADVICE (electronic Advice and Diagnosis Via the Internet following Computerised Evaluation).
The eADVICE system was tested in the field of paediatric incontinence, a condition that afects
up to 20% of Australian children with specialist wait-times of up to two years [? ].</p>
      <p>As illustrated in Figure ??, eADVICE provides access to families (under the care of their
general practitioner (GP) while awaiting a specialist appointment) to a website that asks a
set of questions to ascertain the medical status and provides one or more of the treatments
personalised for the child. Initial pilots with eADVICE-incontinence found that adherence to
the advice was on average 50%, consistent with the literature [? ]. After adding a virtual coach
(called Dr. Evie) to eADVICE-continence, a pilot study with 74 patients who had access to the
program over six months resulted in 54% becoming dry during the day and 22% becoming dry at
night. Improvements, though not becoming dry, were also experienced by 17% during the day
and 33% at night, while only 5% reported becoming worse at night, and 29% reported a resolution
without needing a specialist appointment. Adherence to the treatment advice provided by the
virtual coach rates was as follows: 100% to reduce cafeine, 97% to fluid advice, 94% to bowel
program, 72% to timed voiding, 62% to alarm training and 33% to medication discussion [? ].
eADVICE-continence has been further evaluated in an RCT with 239 patients showing that the
intervention group had significantly lower rates of incontinence than the control group (74.4%
vs 89.7%) and frequent bedwetting (54.7% vs 68.0%) at 6 months. See [? ] for more details on the
health outcomes.</p>
      <p>With these promising rates of adherence to the recommended health behaviours, we
proposed to develop eADVICE-sleep, which includes the sleep adherence mentor (SAM) to deliver
treatments specific to sleep problems. Users could be children, teenagers or parents of children
with sleep problems. As shown in Figure ??, the family first visits their GP. If the GP is unable
to resolve their child’s sleep problem, they are given a specialist referral, placed on the clinic’s
waiting list and given access to eADVICE-sleep. Upon the first access and then each fortnight,
the family has access to the website to answer questions about the child’s current condition.
Accordingly, the website executes a number of age diferentiated algorithms which are used
to identify one or more treatment plans for a two-week intervening period. See Table ?? in
Appendix ?? for a snippet from the infant (8 months - 4 years old) algorithm. The website’s
algorithms require information including weekday and weekend bed and wakeup times,
schoolnight bedtime, waking during the night, naps during the day and cafeine consumption questions.
The algorithms assist in triaging patients with urgent needs by including triggers which send
an email to the clinic and which direct the parent to ring the clinic urgently. This is similar to
identifying risky situations and when the patient needs to be seen by a human as in the study
by [? ]. Figure ?? presents an example of the website interface for a patient (Eve) with four
treatment recommendations. While patients can only receive treatment advice fortnightly at
most so they have suficient time to try the advice, patients can revisit the discussion at any
time to clarify the process and review the explanations again or to explore alternative flows of
the conversation and options provided by the virtual coach to potentially help them in their
decision-making and in case they change their mind or find the option did not work as they
expected. The system, the virtual coach and the dialogues are designed following evidence
based recommendations and the specialists at CHW.</p>
    </sec>
    <sec id="sec-5">
      <title>4. The explainable Agent and Dialogue Design</title>
      <p>The agent SAM, Figure ??, is implemented using the UNITY 3D game engine, which is integrated
with the designed authoring tool which is a lightweight version of XFAtiMA [? ]. XFAtiMA
(explainable FAtiMA) is an extension version of the belief-desire-intention agent architecture
FAtiMA [? ]. An XVA with XFAtiMA can explain its behaviour (choice of recommendation in
this context) based on its beliefs and/or goals. The lightweight version of XFAtiMA is designed
so an XVA can be run on internet browsers so that patients and their families would not need
to download and extract an application to their computer to interact with SAM.</p>
      <p>Interacting with SAM is only available through the password-protected eADVICE-sleep
website. Users could be children, teenagers with sleep problems, and their parents. In the beginning,
all the users engage with SAM in an introductory interaction, where SAM introduces itself
and explains how the system and process work. SAM is designed to deliver advice/treatments
around the most common behavioural sleep problems: sleep diary, sleep hygiene, settling
routines, snoring, night terrors and cafeine consumption. The system can be run in two modes
– child-friendly mode and parental mode – with the appropriate language for each group.</p>
      <sec id="sec-5-1">
        <title>4.1. Treatments</title>
        <p>The Sleep Diary conversation is designed to encourage and guide the appropriate use of the
sleep diary. While this is not a treatment, use of the diary is commonly advised assessment, as
it captures essential data such as the patient’s daily sleep time (duration and patterns), quality
of sleep and sleeps behaviours (e.g. napping), which is needed by eADVICE to calculate other
appropriate treatments and to provide self-evaluation for the patient of their sleep.
eADVICEsleep users enter their 14-day sleep diary in the system and then interact with SAM, which
explains the importance of the sleep diary for accurate assessment and answers the most
frequently asked questions by the users.</p>
        <p>Sleep hygiene refers to bedtime-related behaviours. Poor sleep hygiene such as cafeine
consumption before bed and excessive electronic device use is one of the main reasons for
children’s sleep problems, teenagers in particular [? ]. While sleep hygiene treatment targets
adolescents, SAM further delivers two similar treatments specific for infants and children, called
settling routines. At this age, sleep can be viewed as a learned behaviour [? ]. SAM provides
advice to parents on how to prepare a sleep environment that can help their children to settle
and sleep independently. For example, SAM would advise a mother of a baby older than four
months to deal with frequent night wakeups by saying: “If your baby is older than four months
you can start weaning them of night feeds or phasing out bottle feeding. At this age, most babies
wake up at night because they are used to eating, but they do not need the night-time calories to
grow properly.”</p>
        <p>Night terrors is also a common problem for which SAM provides three alternative treatments
for parents to choose from according to their context. The three treatments are a regular bedtime
routine (to set a fixed and regular bedtime routine), no touch treatment (to refrain from touching
the child when night terrors happen) and scheduled awakening (to record the occurrence of the
night terrors for two weeks and then wake the child before they start, according to the schedule
for 10 nights). SAM provides the steps of every treatment with explanations and examples.</p>
        <p>Breathing problems afect up to 14% of children globally and are linked to many behavioural,
cardiovascular and neurocognitive functions [? ]. Snoring is an indication of having breathing
problems, and in severe cases, the child has obstructive sleep apnoea. SAM assesses if the child
has a snoring issue and asks the parents to record their child snoring in a log for 14 days. Later,
SAM discusses the log with the parents and detects if the child has obstructive sleep apnoea.
SAM would advise the parents to use an over-the-counter (i.e. doctor’s prescription not needed)
nasal spray, which is a common procedure until they can see the doctor. SAM explains the
treatment and expected outcome and provides strategies on how to encourage the child to
use/accept the spray using rewards and explanation. Time-specific conversations have been
designed to allow parents to interact with SAM after two weeks and again after two months of
snoring treatments to assess their conditions and advise accordingly.</p>
        <p>Finally, cafeine is associated with sleep problems particularly when it is consumed at night
[? ]. Cafeine can be found not only in cofee but in many products such as chocolate, energy
drinks, cola and cafeinated snacks. SAM informs children about these products, discusses their
beliefs about the products, and recommends alternatives.</p>
      </sec>
      <sec id="sec-5-2">
        <title>4.2. Explanation</title>
        <p>Content for the dialogues for the treatments has been provided by the specialist team and
from reading relevant literature. A template for the dialogue is designed to provide a structure
for the provided treatments as illustrated in Figure ??. This template has provided guidance
for the acquisition of the domain knowledge, including associated beliefs (which are often
barriers raised by patients), goals (which are typically the drivers and motivations expressed by
patients), education (in the form of explanations and clarifications), and treatments (which are
the recommendations provided).</p>
        <p>Perhaps more importantly, the template provided a clear way to connect beliefs, goals,
recommendations and explanations. An example of the use of the template to design the
dialogues is presented in Appendix ??: the cafeine treatment. SAM starts every conversation
by welcoming the user and introducing the treatment topic. Then, it discusses the user’s goal
of the treatment. It afirms its understanding so the user feels being heard and understood and,
consequently, builds mutual understanding. At this stage, SAM chats with the user to elicit
more information required to tailor the treatment. Eliciting the user’s information and building
mutual understanding could appear frequently at any time in the conversation when suitable.</p>
        <p>Every treatment consists of a number of recommendations that could be fixed (e.g.
recommending cafeine alternatives) or tailored (e.g. recommending a specific sleep routine according
to age). As presented in Figure ??, recommendations could be tailored to the user’s
information/context (e.g. age), beliefs (e.g. too busy to follow a sleep routine) or goals (e.g. need to
give up on cafeinated drinks). The user has the choice to ask for more information after SAM
provides a fixed recommendation and to ask for an explanation after a tailored recommendation.</p>
        <p>The explanation is designed to explain why the recommendation is given following one of
three explanation patterns: belief-only, goals-only or beliefs and goals. These patterns have
been evaluated previously in [? ]. Further, the patterns are designed considering the explanation
principles when a human is the target: meaningful, accurate and focused knowledge to serve
the desired outcome [? ].</p>
        <p>SAM explains how a recommendation is linked to the user’s mental state (beliefs or goals) or
information provided and may remind the user of the treatment goal before it provides more
information/knowledge about why the user should follow the recommendation. SAM refers to
the user’s belief by stating ”you think/find...” and to the user’s goal as ”you want...” to signify
subjectivity as recommended by [? ]. For example, SAM would explain why a busy mum should
follow a sleep routine for her baby by saying: “You find yourself and your family are very busy
(user’s belief), but it is still important to try to keep regular sleep times (the recommendation).
You told me you want your child to have a good sleep to develop well (user’s goal). Actually, you
and your child need enough sleep, and being very busy takes a lot of energy (extra knowledge).”</p>
        <p>After discussing all the recommendations in the treatment plan, SAM closes its conversation
with a positive note or by encouraging the patient to follow the advice by setting a goal to be
achieved in the next two weeks, followed by a friendly farewell.</p>
        <p>While patients can only reassess and receive treatment advice fortnightly at most, patients
can revisit the discussion at any time to clarify the process and review the explanations again
or to explore alternative flows and options, which might help them in their decision-making
if they have changed their minds or find one option did not work as they expected. For this
reason, When patients revisit a dialogue we ask their beliefs again, rather than assuming the
same answer as before.</p>
      </sec>
    </sec>
    <sec id="sec-6">
      <title>5. Initial Evaluation</title>
      <p>We have obtained ethics approval to conduct a pilot with 50 paediatric patients at CHW. Further
funding is required to conduct the pilot. As part of the development process, we have received
initial feedback from parents and children, as well as other health professionals at the hospital.
The incontinence specialist has commented on the superiority of the sleep dialogues in terms
of structure, content and comprehensiveness in comparison with the continence dialogues that
lack a clear connection between barriers (beliefs) and motivations (goals) and explanation and
education provided. Some feedback showed interest from teenagers to get more information
from SAM by including the option ‘more info’ in diferent places in the dialogue. Examples of
positive feedback from users are:</p>
      <p>• A professional: “clear, easy, simple to navigate, lots of information broken down into simpler
chunks, good examples and transparent language by providing explanations”.</p>
      <p>• A mother of a newborn: “Questions were clear and written well”.</p>
      <p>• A father of a 9-year-old and 10-year-old: “my kids viewed it all as an educational thing rather
than a medical thing and thought Dr. SAM wasn’t like a real Dr. They thought it would be good
to show at their schools, both to teachers &amp; classmates. This perception could be good if the aim
is to minimise medicalisation. The kids perceived SAM as a friendly educational tool.” • More
constructive feedback was received from a healthcare professional such as “my kids suggested
pictures &amp; diagrams, for example, they asked what tonsils look like etc”, and “my daughter wanted
to see a video of a night terror (which I showed her) and asked lots of questions mainly about
nightmares. Lots of fascination”.</p>
    </sec>
    <sec id="sec-7">
      <title>6. Conclusion and Future Directions</title>
      <p>In this article, we reported a work in progress to deploy a real application for children (newborns
to teenagers) with sleep problems. The system is built as re-engineered version of a previous
system (eADVICE-continence) [? ], which has been proven successful in helping children with
incontinence problems. The XVA SAM is designed to deliver tailored treatments to children
and parents. These treatments are adjusted every two weeks according to the reported progress
by the patient. Sam’s dialogues of the treatments were designed following a template that
includes delivering advice to change sleep-related behaviours according to the patient’s beliefs,
goals or context. The explanation templates provided a structured and comprehensive approach
to creating dialogues that ensured beliefs and goals were acquired and discussed. The initial
feedback of the system and the XVA SAM by patients and specialists is promising. However,
the work is still in its early stages as it was on hold for a while due to a funding issue. A
possible future direction, as suggested by [? ], is to incorporate health literacy measures into the
design of the explanation patterns, particularly the knowledge component. This could facilitate
personalisation of both the knowledge component and its language, potentially improving
patient adherence [? ]. Tailoring the explanation language and knowledge level to the primary
user’s age, whether child or parent, is another avenue for personalisation.</p>
    </sec>
    <sec id="sec-8">
      <title>Acknowledgments</title>
      <p>The authors would like to thank the families and individuals who provided feedback on SAM
and eADVICE-sleep. We also thank NSW Health for their generous funding of the Round 3
2018 Translational Research Grant.</p>
    </sec>
    <sec id="sec-9">
      <title>A. The website algorithm</title>
      <p>Table ?? presents a snippet from the website algorithm used to evaluate the infants’ sleep
problem. Parents answer these questions on the eADVICE website. The parent can click on a
button labelled ”more information”, to receive a popup window with the reason why we are
asking them this question, the reason connected with a specific question is shown in the final
column. For older age groups, there is also a ”kids” version with simplified language and related
pictures/cartoons to make the page look more fun. The responses are used to determine which
treatment to recommend.</p>
    </sec>
    <sec id="sec-10">
      <title>B. Example of the dialogue</title>
      <p>C. What we expect from the workshop
1. Measurement Validity: seeking feedback on the appropriateness of proposed methods
for measuring behavior change in our target population. This feedback is part of the
collaborative efort with healthcare and HCI professionals which is crucial for a robust
codesign process.
2. Recruitment Strategies: seeking suggestions for alternative recruitment methods or
collaborative strategies to increase sample size, particularly for design validation purposes.
3. Explanation Perception: identify potential factors influencing the target audience’s
perception of the explanations patterns provided.</p>
      <p>Set
Weekday
schedule
Weekday
sleep times 2a
Weekdayvs 4
Weekend
Weekend
bedtimes +
wakeup
times
4. Tailored Explanation Design: Exploring strategies for efectively tailoring explanations
and knowledge communication styles for diferent age groups within the pediatric range.
5. Challenges and Engagement: Seeking feedback on potential challenges with the
proposed approach, including maintaining children’s engagement levels throughout and
the complexity of eliciting beliefs and goals through dialogue.
6. Ethical Considerations: Addressing and ensuring adherence to all ethical considerations
and safety issues related to the workshop and study design.
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      <p>Figure 5: Part1</p>
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