<http://caligraph.org/ontology/1950s_ballet_premiere>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1950s_ballet_premieres> .
<http://caligraph.org/ontology/1950s_ballet_premiere>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Lists_of_1950s_ballet_premieres> .
<http://caligraph.org/ontology/1956_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .
<http://caligraph.org/ontology/1951_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .
<http://caligraph.org/ontology/1950s_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/20th-century_ballet_premiere> .
<http://caligraph.org/ontology/1953_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .
<http://caligraph.org/ontology/1959_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .
<http://caligraph.org/ontology/1950_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .
<http://caligraph.org/ontology/1954_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .
<http://caligraph.org/ontology/1950s_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#label>	"1950s ballet premiere" .
<http://caligraph.org/ontology/1958_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .
<http://caligraph.org/ontology/1957_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .
<http://caligraph.org/ontology/1950s_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/1952_ballet_premiere>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_ballet_premiere> .