About: http://webisa.webdatacommons.org/60264427

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	The following chart demonstrates the join problem types as described in Carpenter's book.
http://www.w3.org/ns/prov#wasQuotedFrom	yale.edu