Ontology-Based Multiple Choice Question Generation

Algorithm 1

Bibtex OWL/XML ontology for “Book”.

<owl:Class rdf:ID="Book">

  <rdfs:subClassOf rdf:resource="#Entry" />

  <rdfs:label xml:lang="en">Book</rdfs:label>

  <rdfs:comment xml:lang="en">A book with an explicit publisher.</rdfs:comment>

  <rdfs:subClassOf>

   <owl:Restriction>

      <owl:onProperty rdf:resource="#humanCreator" />

      <owl:minCardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:minCardinality>

   </owl:Restriction>

 </rdfs:subClassOf>

 <rdfs:subClassOf>

   <owl:Restriction>

   <owl:onProperty rdf:resource="#hasTitle" />

      <owl:minCardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:minCardinality>

   </owl:Restriction>

 </rdfs:subClassOf>

<rdfs:subClassOf>

 <owl:Restriction>

      <owl:onProperty rdf:resource="#hasPublisher" />

      <owl:minCardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:minCardinality>

 </owl:Restriction>

</rdfs:subClassOf>

<rdfs:subClassOf>

 <owl:Restriction>

      <owl:onProperty rdf:resource="#hasYear" />

      <owl:minCardinality rdf:datatype="&xsd;nonNegativeInteger">1</owl:minCardinality>

 </owl:Restriction>

 </rdfs:subClassOf>

</owl:Class>