About: http://webisa.webdatacommons.org/36916383

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	R is a hydrogen atom or is a substituted or unsubstituted alkyl group, preferably an alkyl group having from 1 to 6 carbon atoms;
http://www.w3.org/ns/prov#wasQuotedFrom	google.com