About: bakken shale

Premodifier: bakken
Head noun: shale

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

Broader concepts

label	provenance	confidence
north america	isap:230755333	0.589736
oil	isap:324041694	0.489502
core area	isap:197970067	0.394344
natural gas gathering	isap:339629611	0.385625

Narrower concepts

label	provenance	confidence
north dakota	isap:121003323	0.365696