About: http://webisa.webdatacommons.org/228306601

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	In some systems, such as relational databases, the basic table definitions and some related information are stored in `system catalogs` which themselves are relational tables which may be accessed by the user in read-only mode.
http://www.w3.org/ns/prov#wasQuotedFrom	patents.com