About: unconventional source of oil

Premodifier: unconventional
Head noun: source
Postmodifier: of oil

Same concepts

Broader concepts

label	provenance	confidence

Narrower concepts

label	provenance	confidence
oil shale	isap:153854460	0.885203
tar sand	isap:312264991	0.818515
shale gas	isap:212652644	0.818328
shale	isap:153854474	0.591096