About: http://webisa.webdatacommons.org/63852538

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	gases such as nitrous oxide, carbon dioxide, ozone, hydrogen sulfide, ammonia, sulfur dioxide, carbon monoxide, phosgene and any mixture of any of them.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com