About: http://webisa.webdatacommons.org/220933802

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	L and L' are identical or different and are preferably a substituted or unsubstituted cyclopentadienyl group, O, S, PR4 or NR4, where R4 is a hydrogen atom or a C1 -C30 -hydrocarbon radical such as C1 -C20 -alkyl or C6 -C14 -aryl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es