About: http://webisa.webdatacommons.org/299178824

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	A variable is an attribute of a physical or an abstract system which may change its value while it is under observation.
http://www.w3.org/ns/prov#wasQuotedFrom	reference.com