About: american water works association

Premodifier: american water works
Head noun: association

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

Broader concepts

label	provenance	confidence
professional organization	isap:216500797	0.794051
national organization	isap:216501607	0.675776
educational association	isap:130253716	0.664501
group	isap:414584811	0.519324

Narrower concepts

label	provenance	confidence