<http://caligraph.org/ontology/Symbol_introduced_in_1964>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_1966>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_1968>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_1962>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Symbol_introduced_in_1961>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_1963>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Symbols_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_1960>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol> .
<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s>	<http://www.w3.org/2000/01/rdf-schema#label>	"Symbol introduced in the 1960s" .
<http://caligraph.org/ontology/Symbol_introduced_in_1965>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_1969>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .
<http://caligraph.org/ontology/Symbol_introduced_in_1967>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Symbol_introduced_in_the_1960s> .