About: http://webisa.webdatacommons.org/124856580

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	I know theres tons of wars in the db community of why you should or should not use NULLS. I prefer them if things are really unknown, especially with dates.
http://www.w3.org/ns/prov#wasQuotedFrom	sqlteam.com