_:vb50897971	<http://www.w3.org/2007/05/powder-s#describedby>	<http://demo.openlinksw.com/about/id/entity/http/purl.org/ontology/bibo/issn> .
<http://purl.org/ontology/bibo/Issue>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	_:vb50897971 .
_:vb50897971	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Restriction> .
<http://purl.org/ontology/bibo/issn>	<http://xmlns.com/foaf/0.1/topic>	_:vb50897971 .
_:vb50897971	<http://www.w3.org/2002/07/owl#onProperty>	<http://purl.org/dc/terms/hasPart> .
_:vb50897971	<http://www.w3.org/2002/07/owl#minCardinality>	"1"^^<http://www.w3.org/2001/XMLSchema#nonNegativeInteger> .