About: airborne particulate matter

Premodifier: airborne particulate
Head noun: matter

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

Broader concepts

label	provenance	confidence
pollutant	isap:420897276	0.834370

Narrower concepts

label	provenance	confidence
dust	isap:301687993	0.565455
smoke	isap:157124314	0.539169