About: http://webisa.webdatacommons.org/290178582

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 represents a hydrocarbon group such as a methyl, ethyl, n-propyl, isopropyl, n-butyl or isobutyl group, preferably a methyl, ethyl or isobutyl group, especially preferably a methyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr