About: http://webisa.webdatacommons.org/316769259

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	wherein W is hydrogen or a methyl radical and Rf is an alkyl radical, preferably an alkyl radical comprising carbon atoms in a range between about 1 and about 20.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com