About: http://webisa.webdatacommons.org/134429109

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	a SUM is an aggregation of data, when working with aggregations you can specify the clause GROUP BY to show results grouped by what you need.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com