About: http://webisa.webdatacommons.org/89880197

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 R2 is a bivalent hydrocarbon group, R3 is a hydroxy group or a hydrolyzable groups, R4 is a monovalent hydrocarbon group, and r is an integer of from 1 to 3.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au