About: http://webisa.webdatacommons.org/325484341

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	To determine which types will be used for clustering, a database is used with the history of the last 30 days or other reasonable period, and count all the impressions for each type.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com