About: http://webisa.webdatacommons.org/296330099

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	Gosh, I always thought mass was a side effect of gravity, gravity is always attractive and mass is always positive.
http://www.w3.org/ns/prov#wasQuotedFrom	discovermagazine.com