About: first source

Premodifier: first
Head noun: source

Same concepts
http://dbpedia.org/resource/1st_Source

Broader concepts

label	provenance	confidence
second source	isap:389439289	0.717127
source	isap:389439333	0.403257
book	isap:497936970	0.359426

Narrower concepts

label	provenance	confidence
requirement	isap:143291679	0.355279