About: http://webisa.webdatacommons.org/308319946

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	If gravity is a long-range force, the effects must be transmitted at the speed of light, so that there must be gravitational waves.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com