About: railroad line

Premodifier: railroad
Head noun: line

Same concepts
http://dbpedia.org/resource/Glossary_of_rail_transport_terms

Broader concepts

label	provenance	confidence
transportation system	isap:302824498	0.729305
area	isap:166603736	0.445041
neighborhood	isap:313398922	0.367041

Narrower concepts

label	provenance	confidence
santa fe	isap:333343226	0.598385
line	isap:170638255	0.329311