About: http://webisa.webdatacommons.org/356041797

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	Spacetime geometry, and hence the gravitational effects, are equated to the matter present in a system, which may include energy, pressure and other quantities other than mass.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com