About: http://webisa.webdatacommons.org/34930666

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The tiny particles are produced by coal plants, industries, motor vehicle exhaust, outdoor burning and other sources.
http://www.w3.org/ns/prov#wasQuotedFrom	onlineathens.com