About: http://webisa.webdatacommons.org/354813822

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	wherein each of R3 and R4 which are independent of each other, is a hydrogen atom, an alkyl group or a cycloalkyl group, or R3 and R4 may be bonded to each other to form a ring.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com