About: http://webisa.webdatacommons.org/415168383

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	gravity, which is expressed in degrees, is a scale developed for measuring the relative density of various petroleum liquids.
http://www.w3.org/ns/prov#wasQuotedFrom	docstoc.com