About: natural gas leak

Premodifier: natural gas
Head noun: leak

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

Broader concepts

label	provenance	confidence
emergency	isap:288750601	0.800631
environmental hazard	isap:300823263	0.733539
chemical	isap:455454887	0.531231
hazard	isap:300823269	0.456825

Narrower concepts

label	provenance	confidence