About: http://webisa.webdatacommons.org/373230138

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	We observe a gravitational influence and currently we know of only one thing that can do that: matter.So it is natural to have a form of matter as the first theory to test.
http://www.w3.org/ns/prov#wasQuotedFrom	phys.org