<http://caligraph.org/ontology/Proposed_dual-tube_railway_tunnel>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Proposed_dual-tube_railway_tunnel>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Proposed_dual-tube_railway_tunnels> .
<http://caligraph.org/ontology/Proposed_dual-tube_railway_tunnel>	<http://www.w3.org/2000/01/rdf-schema#label>	"Proposed dual-tube railway tunnel" .
<http://caligraph.org/ontology/Single-tube_railway_tunnel_with_a_proposed_second_tube>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Proposed_dual-tube_railway_tunnel> .
<http://caligraph.org/ontology/Proposed_dual-tube_railway_tunnel>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Dual-tube_railway_tunnel> .
<http://caligraph.org/ontology/Proposed_dual-tube_railway_tunnel>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Proposed_railway_tunnel> .
<http://caligraph.org/ontology/Proposed_dual-tube_railway_tunnel>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Proposed_dual-tube_tunnel> .