About: http://webisa.webdatacommons.org/390514893

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	Creating a composite-id with 2 columns, only one of them is a foreign key to another table (Object Relational Mapping forum at JavaRanch)
http://www.w3.org/ns/prov#wasQuotedFrom	coderanch.com