About: http://webisa.webdatacommons.org/221054939

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	Ra SiOb where R is a monovalent hydrocarbon group other than alkenyl and a is a numeral between 2.0 and 2.2 and b is a numeral between 0.9 and 1.0.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com