About: http://webisa.webdatacommons.org/390691589

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	Let A and B be families of properties closed under such Boolean operations as complementation, conjunction and disjunction.
http://www.w3.org/ns/prov#wasQuotedFrom	typepad.com