About: http://webisa.webdatacommons.org/210659191

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	For example, P1, and P2 each are hydrogen atoms, R1 and R2 each individually are methyl groups or hydrogen atoms or combinations thereof, U is a trifluoromethyl group and Z is a carboxylic acid or a carboxylic ester.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com