_:vb50857713	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Restriction> .
_:vb50857713	<http://www.w3.org/2002/07/owl#onProperty>	<http://www.w3.org/2006/time#years> .
_:vb50857713	<http://www.w3.org/2002/07/owl#maxCardinality>	"1"^^<http://www.w3.org/2001/XMLSchema#nonNegativeInteger> .
<http://www.w3.org/2006/time#GeneralDurationDescription>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	_:vb50857713 .