About: http://webisa.webdatacommons.org/421734874

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	Information such as the columns that are or have been used and/or the number of rows that have been accessed, may be utilized to identify certain data that is likely to not be used during processing of the database query.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com