About: http://webisa.webdatacommons.org/213421104

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	W is methylene or ethane-1,1-diyl; n is 0 or 1; and R2, R3, R4, R5, R6, R7, R8, R9, and R10 are a hydrogen atom or methyl. 7.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com