About: http://webisa.webdatacommons.org/9393610

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 view of their handleability and safety, however, preferably used are one or more selected from organic compounds such as hydrocarbons, flons, ethers, etc., and carbon dioxide, nitrogen, air, etc., either singly or as combined.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com