About: river pollution

Premodifier: river
Head noun: pollution

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

Broader concepts

label	provenance	confidence
serious problem	isap:28880499	0.602525
issue	isap:14659712	0.571746
problem	isap:28880440	0.481699

Narrower concepts

label	provenance	confidence