About: http://webisa.webdatacommons.org/92078412

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	People have not invented it, it is a fact of Nature that may be measured, and a very hard number to calculate theoretically because water is a messy molecule and a high number of the nearby molecules makes things even more messy.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com