About: http://webisa.webdatacommons.org/229924138

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	They are discovered by ???doing the math,??? which may include data aggregation, cluster analysis, factor analysis, and other statistical methods applied to large sample sets.
http://www.w3.org/ns/prov#wasQuotedFrom	boxesandarrows.com