<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Building_or_structure_in_Leiden> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://caligraph.org/ontology/location>	<http://caligraph.org/resource/Leiden> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Photographic Refractor Leiden Observatory" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Leiden Obs." .
<http://caligraph.org/resource/Ingrid_van_Houten-Groeneveld>	<http://caligraph.org/ontology/institution>	<http://caligraph.org/resource/Leiden_Observatory> .
<http://caligraph.org/resource/Maarten_Schmidt>	<http://caligraph.org/ontology/almaMater>	<http://caligraph.org/resource/Leiden_Observatory> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2000/01/rdf-schema#label>	"Leiden Observatory" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Event_Horizon_Telescope> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Sterrewacht te Leiden" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Astronomical_observatories_in_the_Netherlands> .
<http://caligraph.org/resource/Cornelis_Johannes_van_Houten>	<http://caligraph.org/ontology/institution>	<http://caligraph.org/resource/Leiden_Observatory> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"observatory" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/1633_establishment_in_the_Dutch_Republic> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_largest_optical_refracting_telescopes> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Timeline_of_Leiden> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Leiden observatories" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_astronomical_observatories> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Leiden University Observatory" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Astronomy_institutes_and_departments> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Astronomy_institute_or_department> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2002/07/owl#sameAs>	<http://dbpedia.org/resource/Leiden_Observatory> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Largest_optical_refracting_telescope> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:1633_establishments_in_the_Dutch_Republic> .
<http://caligraph.org/resource/Frank_Pieter_Israel>	<http://caligraph.org/ontology/almaMater>	<http://caligraph.org/resource/Leiden_Observatory> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Netherlands_Research_School_for_Astronomy> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Astronomical_observatory_in_the_Netherlands> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Observatory_code> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Buildings_and_structures_in_Leiden> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_observatory_codes> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Leiden Astronomical Observatory" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Observatory> .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Sterrewacht Leiden" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Leiden Observatory" .
<http://caligraph.org/resource/Leiden_Observatory>	<http://www.w3.org/2004/02/skos/core#altLabel>	"Leiden" .