About: http://webisa.webdatacommons.org/75322885

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	The specific gravity is defined for these purposes as the ratio of the density (weight) of a substance to the density of another substance taken as a standard, such as water.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com