About: http://webisa.webdatacommons.org/420105107

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	Once the particle has mass, it is affected by gravity, but if gravity really is a force, then it must be mediated by some other particle, such as a graviton.
http://www.w3.org/ns/prov#wasQuotedFrom	drwile.com