About: air pollution control

Premodifier: air pollution
Head noun: control

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

Broader concepts

label	provenance	confidence
environmental technology	isap:244120354	0.729709
area	isap:76466937	0.695783
environmental issue	isap:37420605	0.545318
application	isap:65043730	0.544334
agency	isap:272182556	0.285482
factor	isap:267888313	0.276782

Narrower concepts

label	provenance	confidence
scrubber	isap:343357694	0.598633