About: http://webisa.webdatacommons.org/100722236

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 composition of claim 1 wherein R1 is hydrogen or methyl, R2 is a C1-4 alkyl, and R3 is hydrogen or methyl.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com