About: http://webisa.webdatacommons.org/2285694

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	Common sources include unpaved roads, waste burning, agriculture, and other activities along the U.S.-Mexico border.
http://www.w3.org/ns/prov#wasQuotedFrom	epa.gov