About: http://webisa.webdatacommons.org/274680329

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	It is understood that in combination with ozone or in lieu of ozone there may be used other oxidizing gases such as chlorine, nitrous oxides and/or sulfur oxides.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com