<http://caligraph.org/resource/Probleemblad_(20370975)>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://caligraph.org/ontology/Chess_periodical> .
<http://caligraph.org/resource/Probleemblad_(20370975)>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#NamedIndividual> .
<http://caligraph.org/resource/Probleemblad_(20370975)>	<http://www.w3.org/2000/01/rdf-schema#label>	"Probleemblad" .
<http://caligraph.org/resource/Probleemblad_(20370975)>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/List_of_chess_periodicals> .
<http://caligraph.org/resource/Probleemblad_(20370975)>	<http://www.w3.org/2004/02/skos/core#prefLabel>	"Probleemblad" .