About: http://webisa.webdatacommons.org/14056150

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	The aryl group represented by R20, R21, R22 and R23 is preferably an aryl group having 6 to 10 carbon atoms, such as phenyl, tolyl or xylyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com