About: http://webisa.webdatacommons.org/397037169

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	This problem is especially acute in areas having a high concentration of internal combustion engines, such as in major metropolitan areas.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com