About: http://webisa.webdatacommons.org/265871562

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	Any substituents on X3 and X4 other than the bridging group independently are a hydrogen atom or a substituted or unsubstituted alkyl or alkenyl group.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr