<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/Single-tube_tunnel_with_a_proposed_second_tube> .
<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/Single-tube_railway_tunnel_with_a_proposed_second_tube>	<http://www.w3.org/2000/01/rdf-schema#label>	"Single-tube railway tunnel with a proposed second tube" .
<http://caligraph.org/ontology/Single-tube_railway_tunnel_with_a_proposed_second_tube>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Single-tube_railway_tunnels_with_a_proposed_second_tube> .
<http://caligraph.org/ontology/Single-tube_railway_tunnel_with_a_proposed_second_tube>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .