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<http://caligraph.org/ontology/Railroad_bridge_on_the_National_Register_of_Historic_Places_in_Massachusetts>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Railway_bridge_on_the_National_Register_of_Historic_Places> .
<http://caligraph.org/ontology/Railroad_bridge_on_the_National_Register_of_Historic_Places_in_Massachusetts>	<http://www.w3.org/2000/01/rdf-schema#label>	"Railroad bridge on the National Register of Historic Places in Massachusetts" .
<http://caligraph.org/ontology/Railroad_bridge_on_the_National_Register_of_Historic_Places_in_Massachusetts>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Railroad_bridge_on_the_National_Register_of_Historic_Places_in_Massachusetts>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Railway_building_or_structure_on_the_National_Register_of_Historic_Places_in_Massachusetts> .
<http://caligraph.org/ontology/Railroad_bridge_on_the_National_Register_of_Historic_Places_in_Massachusetts>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Railroad_bridges_on_the_National_Register_of_Historic_Places_in_Massachusetts> .
<http://caligraph.org/ontology/Railroad_bridge_on_the_National_Register_of_Historic_Places_in_Massachusetts>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Bridge_on_the_National_Register_of_Historic_Places_in_Massachusetts> .