About: http://webisa.webdatacommons.org/424360739

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	each R3 is independently hydrogen, halogen, or an organic group, such as a carboxyl group or an alkyl carboxylate group;
http://www.w3.org/ns/prov#wasQuotedFrom	google.com