About: http://webisa.webdatacommons.org/343054093

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	In some cases, a fluid may be an exhaust gas, which may include substances such as hydrocarbons, NOx, CO, Hg, sulfur species, and/or particulate matter.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com