About: http://webisa.webdatacommons.org/418432943

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	Aggregation support: Allow to execute queries that will retreive such things as count(), sum(), avg(), etc.
http://www.w3.org/ns/prov#wasQuotedFrom	ayende.com