About: http://webisa.webdatacommons.org/40126019

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	Joins take two data sets (tables, subquery results or other sources) and link them together based on some logical function such as equality of the columns.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com