About: railway system

Premodifier: railway
Head noun: system

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

Broader concepts

label	provenance	confidence
thing	isap:115238985	0.635397
bad idea	isap:498449245	0.525937
infrastructure	isap:472018778	0.399716
world	isap:117566721	0.292085
operation	isap:419938236	0.287644

Narrower concepts

label	provenance	confidence
metro	isap:154778535	0.333252
europe	isap:395784162	0.258166