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<title>Example Web Editor</title>
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<h1>Example Problem Web Editor</h1>
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<div class="xtext-editor"
data-editor-xtext-lang="problem"
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data-editor-send-full-text="false"
><pre>class Family {
contains Person[] members
}
class Person {
Person[] children opposite parent
Person[0..1] parent opposite children
int age
TaxStatus taxStatus
}
enum TaxStatus {
child, student, adult, retired
}
% A child cannot have any dependents.
error invalidTaxStatus(Person p) :-
taxStatus(p, child), children(p, _q).
Family('family').
members('family', anne).
members('family', bob).
members('family', ciri).
children(anne, ciri).
?children(bob, ciri).
taxStatus(anne, adult).
age(anne, 35).
bobAge: 27.
age(bob, bobAge).
!age(ciri, bobAge).
scope Family = 1, Person += 5..10.
</pre></div>
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