About: light rail system

Premodifier: light rail
Head noun: system

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

Broader concepts

label	provenance	confidence
public transportation	isap:471895273	0.726599
mass transit	isap:449469510	0.707450
form of public transportation	isap:497942458	0.664788
alternative	isap:451297402	0.654434
option	isap:392081776	0.306218
city	isap:498160764	0.174660

Narrower concepts

label	provenance	confidence
tram	isap:310845962	0.434761
bart	isap:311801467	0.311218