About: http://webisa.webdatacommons.org/161920917

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	ANSI_NULL set option will work for now but NOT a good idea especially if you do not control the environment, plus it will be forced set ON later and cause errors where you will need to re-write your application logic anyway.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com