<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:United_States_Navy_officers> .
<http://caligraph.org/resource/Joseph_Petro>	<http://caligraph.org/ontology/battle>	<http://caligraph.org/resource/Cold_War> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_living_people> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/United_States_Secret_Service_agent> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:United_States_Secret_Service_agents> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/United_States_Navy_officer> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Joseph Petro" .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/2000/01/rdf-schema#label>	"Joseph Petro" .
<http://caligraph.org/resource/Joseph_Petro>	<http://caligraph.org/ontology/birthYear>	"1944" .
<http://caligraph.org/resource/Joseph_Petro>	<http://caligraph.org/ontology/battle>	<http://caligraph.org/resource/Vietnam_War> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:United_States_Navy_personnel_of_the_Vietnam_War> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1944_births> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/Joseph_Petro> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Lists_of_living_people> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/1944_birth> .
<http://caligraph.org/resource/Joseph_Petro>	<http://caligraph.org/ontology/occupation>	<http://caligraph.org/resource/United_States_Secret_Service> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Living_people> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/United_States_Navy_personnel_of_the_Vietnam_War> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Living_person> .
<http://caligraph.org/resource/Joseph_Petro>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .