About: http://webisa.webdatacommons.org/421172928

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	Includes $a (NEW, UPD, or DEL); $b information about updates or type or record such as databases, or CJK records being transmitted, and $c date of transmission.
http://www.w3.org/ns/prov#wasQuotedFrom	cdlib.org