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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	Reply Matthew says: November 10, 2011 at 12:30 pm The left two heads are a centering head and a protractor head.
http://www.w3.org/ns/prov#wasQuotedFrom	toolmonger.com