<http://caligraph.org/ontology/1820s_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Ballet_premiere> .
<http://caligraph.org/ontology/1820s_ballet_premiere>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/1827_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1820s_ballet_premiere> .
<http://caligraph.org/ontology/1821_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1820s_ballet_premiere> .
<http://caligraph.org/ontology/1820s_ballet_premiere>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1820s_ballet_premieres> .
<http://caligraph.org/ontology/1820s_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#label>	"1820s ballet premiere" .
<http://caligraph.org/ontology/1825_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1820s_ballet_premiere> .