<http://caligraph.org/ontology/November_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/May_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/1957_event>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/December_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/1957_sports_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/1957_event>	<http://www.w3.org/2000/01/rdf-schema#label>	"1957 event" .
<http://caligraph.org/ontology/June_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/January_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1950s_event> .
<http://caligraph.org/ontology/March_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/September_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/1957_event>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1957_events_by_country> .
<http://caligraph.org/ontology/October_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/1957_event>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1957_events_by_month> .
<http://caligraph.org/ontology/August_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/April_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/July_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .
<http://caligraph.org/ontology/February_1957_event>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/1957_event> .