About: http://webisa.webdatacommons.org/393889548

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	required to handle these statement types include heap scans, index scans, sorting, joining tables, grouping, aggregates, and uniqueness.
http://www.w3.org/ns/prov#wasQuotedFrom	postgresql.org