About: http://webisa.webdatacommons.org/187698529

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 and R3 are the same or different and each is a C1-C6 alkyl, q and r are the same or different and each is an integer greater than 0.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com