About: http://webisa.webdatacommons.org/225162753

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 Clean Air Act has been instrumental in lowering the amount of toxic chemicals floating in the air ??? pollutants such as lead, carbon monoxide, sulfur dioxide, and other health hazards.
http://www.w3.org/ns/prov#wasQuotedFrom	wilderness.org