About: http://webisa.webdatacommons.org/324929132

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	So, you need some sort of constraints or other specifications on the problem.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com