About: http://webisa.webdatacommons.org/20042499

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	A null can be assigned but it cannot be equated with anything, including itself.
http://www.w3.org/ns/prov#wasQuotedFrom	tutorialspoint.com