_:b27780	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Restriction> .
_:b27780	<http://www.w3.org/2002/07/owl#onProperty>	<http://erlangen-crm.org/current/P83_had_at_least_duration> .
<http://erlangen-crm.org/current/E52_Time-Span>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	_:b27780 .
_:b27780	<http://www.w3.org/2002/07/owl#maxCardinality>	"1"^^<http://www.w3.org/2001/XMLSchema#integer> .