<http://caligraph.org/ontology/Historical_opera>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Opera_set_in_the_12th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_19th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_8th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_17th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_18th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Historical_opera>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Historical_operas> .
<http://caligraph.org/ontology/Opera_set_in_the_10th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_14th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_15th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_21st_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_11th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_7th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_20th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_16th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_antiquity>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_13th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Opera_set_in_the_9th_century>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historical_opera> .
<http://caligraph.org/ontology/Historical_opera>	<http://www.w3.org/2000/01/rdf-schema#label>	"Historical opera" .
<http://caligraph.org/ontology/Historical_opera>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Opera_based_on_real_people> .