About: http://webisa.webdatacommons.org/438499979

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	In Formula (II), B represents a bivalent organic group; R2 represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group; Q represents a hydrolyzable group; and a is an integer of 1 to 3.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com