<http://caligraph.org/ontology/18th-century_fort_in_England>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/18th-century_fortification> .
<http://caligraph.org/ontology/18th-century_fort_in_India>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/18th-century_fortification> .
<http://caligraph.org/ontology/18th-century_fortification>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/18th-century_fortification>	<http://www.w3.org/2000/01/rdf-schema#label>	"18th-century fortification" .
<http://caligraph.org/ontology/American_Revolutionary_War_fort>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/18th-century_fortification> .
<http://caligraph.org/ontology/18th-century_fortification_in_Greece>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/18th-century_fortification> .
<http://caligraph.org/ontology/18th-century_fortification>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:18th-century_fortifications> .
<http://caligraph.org/ontology/18th-century_fortification>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Fortification> .