About: http://webisa.webdatacommons.org/205652000

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	Selection is based on conditions tested, e.g. in order to test a necessary condition, you need only sample where Y = 1, and thus sampling on the dependent variable is a virtue, not a vice.
http://www.w3.org/ns/prov#wasQuotedFrom	asociologist.com