About: http://webisa.webdatacommons.org/139452730

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	Gravity was the first to be figured out in some detail, from experiments with falling objects on earth and observations of how the moon, planets, comets, and other objects move in outer space.
http://www.w3.org/ns/prov#wasQuotedFrom	osti.gov