Wikidata/Development/RDF: Difference between revisions
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Every statement is translated into a number of OWL2 axioms as described below. Every statement is identified by a <code>StatementID</code> which is a <code>IRI</code>.
=== MainSnak a PropertyValueSnak ===
If the <code>MainSnak</code> is a <code>PropertyValueSnak</code>, then it is translated as follows:
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'''StatementID''' v:'''Property''' '''Value''' .
'''StatementID''' rdfs:label ValueLabel('''Statement''') .
=== MainSnak a PropertySomeValueSnak ===
If the <code>MainSnak</code> is a <code>PropertySomeValueSnak</code>, then it is translated as follows:
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ClassAssertion( ObjectSomeValuesFrom( V('''Property''') owl:Thing ) '''StatementID''' )
Annotation( '''StatementID''' rdfs:label ValueLabel('''Statement''') )
In RDF this results in:
=== MainSnak a PropertyNoValueSnak ===
If the <code>MainSnak</code> is a <code>PropertyNoValueSnak</code>, then it is translated as follows:
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ClassAssertion( ObjectAllValuesFrom( V('''Property''') owl:Nothing ) '''StatementID''' )
Annotation( '''StatementID''' rdfs:label ValueLabel('''Statement''') )
=== Qualifier ===
Each <code>Qualifier</code> is translated as follows. If the <code>Qualifier</code> is a <code>PropertyValueSnak</code>, then it is translated as follows:
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ClassAssertion( ObjectAllValuesFrom( V('''Property''') owl:Nothing ) '''StatementID''' )
=== ReferenceRecord ===
Every <code>ReferenceRecord</code> is given a <code>ReferenceID</code> which is an <code>IRI</code>. Every <code>ReferenceRecord</code> is translated as follows:
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