About: http://webisa.webdatacommons.org/20169321

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	nature strongly suggest to me a fluid like aether and that gravity is a nothing
http://www.w3.org/ns/prov#wasQuotedFrom	freelists.org