About: http://webisa.webdatacommons.org/332225560

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	Further, R1, R2, and R3 can contain one or more substituents such as thiol, hydroxy, nitro, amino, nitrile, amide, ester and halogen groups and others.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com