PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Perform analytic, transformational and Euclidean geometric functions Build geometric constructions interactively with points, a set of points for locus, lines, polygons, circles, and other basic geometric objects Alter geometric objects on the fly to see patterns, make conjectures, and draw conclusions -- and, you will get a more intuitive and highly interactive interface Import and export figures t
http://www.w3.org/ns/prov#wasQuotedFrom
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