About: http://webisa.webdatacommons.org/287476841

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	The compiler can then verify these annotations, for example identifying uses of null values, accidental value modifications, and cases where data crosses a trust boundary without proper validation.
http://www.w3.org/ns/prov#wasQuotedFrom	oracle.com