<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Railroad_tunnel_in_Massachusetts> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Immersed_tube_tunnels_in_the_United_States> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Railroad_tunnels_in_Massachusetts> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Immersed_tube_tunnel_in_the_United_States> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Tunnel_in_Boston> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://caligraph.org/ontology/location>	<http://caligraph.org/resource/Boston> .
<http://caligraph.org/resource/Assembly_station>	<http://caligraph.org/ontology/servingRailwayLine>	<http://caligraph.org/resource/Haymarket_North_Extension> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/Haymarket_North_Extension> .
<http://caligraph.org/resource/Sullivan_Square_station>	<http://caligraph.org/ontology/servingRailwayLine>	<http://caligraph.org/resource/Haymarket_North_Extension> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Haymarket Tunnel" .
<http://caligraph.org/resource/Malden_Center_station>	<http://caligraph.org/ontology/servingRailwayLine>	<http://caligraph.org/resource/Haymarket_North_Extension> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Tunnels_in_Boston> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/Wellington_station_(MBTA)>	<http://caligraph.org/ontology/servingRailwayLine>	<http://caligraph.org/resource/Haymarket_North_Extension> .
<http://caligraph.org/resource/Oak_Grove_station>	<http://caligraph.org/ontology/servingRailwayLine>	<http://caligraph.org/resource/Haymarket_North_Extension> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/2000/01/rdf-schema#label>	"Haymarket North Extension" .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Tunnels_completed_in_1975> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Crossing_of_the_Charles_River> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/2004/02/skos/core#altLabel>	"the upstream tunnel" .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Tunnel_completed_in_1975> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://caligraph.org/ontology/location>	<http://caligraph.org/resource/United_States> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Haymarket North Extension" .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/2004/02/skos/core#altLabel>	"underwater crossing" .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_crossings_of_the_Charles_River> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Crossings_of_the_Charles_River> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/2004/02/skos/core#altLabel>	"unused east track" .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://caligraph.org/ontology/location>	<http://caligraph.org/resource/Massachusetts> .
<http://caligraph.org/resource/Haymarket_North_Extension>	<http://www.w3.org/2004/02/skos/core#altLabel>	"relocated along the B&M Western Route" .
<http://caligraph.org/resource/Community_College_station>	<http://caligraph.org/ontology/servingRailwayLine>	<http://caligraph.org/resource/Haymarket_North_Extension> .