_:vb921608	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Restriction> .
_:vb921608	<http://www.w3.org/2002/07/owl#maxCardinality>	"1"^^<http://www.w3.org/2001/XMLSchema#integer> .
_:vb921608	<http://www.w3.org/2002/07/owl#onProperty>	<http://purl.org/dc/terms/isPartOf> .
<http://purl.org/ontology/bibo/DocumentPart>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	_:vb921608 .