About: http://webisa.webdatacommons.org/309515900

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 last I was taught on the subject (and believe me, it was a while ago) was that gravity was a force, but didn't have mass.
http://www.w3.org/ns/prov#wasQuotedFrom	slashdot.org