<http://caligraph.org/resource/Counterweight%20mirror_(19662987)>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_Greek_inventions_and_discoveries> .
<http://caligraph.org/resource/Counterweight%20mirror_(19662987)>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/Counterweight%20mirror_(19662987)>	<http://www.w3.org/2000/01/rdf-schema#label>	"Counterweight mirror" .
<http://caligraph.org/resource/Counterweight%20mirror_(19662987)>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Counterweight mirror" .
<http://caligraph.org/resource/Counterweight%20mirror_(19662987)>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Greek_invention_or_discovery> .