<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places_in_Maryland>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Historic_districts_on_the_National_Register_of_Historic_Places_in_Maryland> .
<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places_in_Maryland>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places_in_Maryland>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historic_district_in_Maryland> .
<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places_in_Maryland>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places> .
<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places_in_Baltimore>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places_in_Maryland> .
<http://caligraph.org/ontology/Historic_district_on_the_National_Register_of_Historic_Places_in_Maryland>	<http://www.w3.org/2000/01/rdf-schema#label>	"Historic district on the National Register of Historic Places in Maryland" .