About: http://webisa.webdatacommons.org/153296709

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	r is an average number such that the formula weight of Rf ranges from about 400 to about 15,000; and
http://www.w3.org/ns/prov#wasQuotedFrom	google.com