<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Penrose triangle" .
<http://caligraph.org/resource/Lionel_Penrose>	<http://caligraph.org/ontology/knownFor>	<http://caligraph.org/resource/Penrose_triangle> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Tribar" .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/1934_introduction> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Example_of_Stigler\u0027s_law> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Penrose Tribar" .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Triangle> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Impossible_objects> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/2000/01/rdf-schema#label>	"Penrose triangle" .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_optical_illusions> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Triangles> .
<http://caligraph.org/resource/Roger_Penrose>	<http://caligraph.org/ontology/knownFor>	<http://caligraph.org/resource/Penrose_triangle> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/Penrose_triangle> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Impossible_object> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/2004/02/skos/core#altLabel>	"\\\"Impossible Triangle\\\"" .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_multiple_discoveries> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1934_introductions> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Optical_illusion> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Impossible_object> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_examples_of_Stigler\u0027s_law> .
<http://caligraph.org/resource/Penrose_triangle>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Multiple_discovery> .