PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Relational Algebra Operations from Set Theory: DIFFERENCE (cont.) Set Difference (or MINUS) Operation The result of this operation, denoted by R - S, is a relation that includes all tuples that are in R but not in S. The two operands must be "type compatible???.
http://www.w3.org/ns/prov#wasQuotedFrom
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