About: http://webisa.webdatacommons.org/190590253

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	Roy says that physicists claim that gravity is a property of matter while Einstein claimed it to be a property of the universe.
http://www.w3.org/ns/prov#wasQuotedFrom	gravitydrivenuniverse-response.com