About: http://webisa.webdatacommons.org/276424089

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	These results are mainly related to reduction in local and regional pollution sources during the past 20 years.
http://www.w3.org/ns/prov#wasQuotedFrom	epa.gov