About: http://webisa.webdatacommons.org/281613211

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	When R2 is an unsubstituted or substituted cycloalkadienyl radical, R1 and R2 may be bonded by an intervening lower alkylene radical.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es