About: http://webisa.webdatacommons.org/119097344

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	Typically, one or a plural kinds of gases selected from among compounds including a halogen such as Cl, HF, NF3, HBr, Cl2, ClF3, BCl2, F2 and Br2 may be used as gases including a halogen in this case.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com