About: http://webisa.webdatacommons.org/134357629

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	Particulate matter in the air comes from many sources, such as factories, smokestacks, exhaust, fires, mining, construction, and agriculture.
http://www.w3.org/ns/prov#wasQuotedFrom	barnesjewish.org