About: first approximation

Premodifier: first
Head noun: approximation

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

Broader concepts

label	provenance	confidence
anything	isap:63955841	0.317967
system	isap:53100118	0.242735
measure	isap:478084533	0.170995

Narrower concepts

label	provenance	confidence