About: http://webisa.webdatacommons.org/81601206

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 necessary condition is a condition that must be met for something to be in the class under discussion.
http://www.w3.org/ns/prov#wasQuotedFrom	metafilter.com