<http://caligraph.org/ontology/Port_city_or_town_of_the_North_Sea>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Port_city_in_Europe> .
<http://caligraph.org/ontology/Port_city_or_town_in_Belgium>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Port_city_or_town_of_the_North_Sea> .
<http://caligraph.org/ontology/Port_city_or_town_in_the_Netherlors>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Port_city_or_town_of_the_North_Sea> .
<http://caligraph.org/ontology/Port_city_or_town_of_the_North_Sea>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Class> .
<http://caligraph.org/ontology/Port_city_or_town_of_the_North_Sea>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://en.wikipedia.org/wiki/Category:Port_cities_and_towns_of_the_North_Sea> .
<http://caligraph.org/ontology/Port_city_or_town_of_the_North_Sea>	<http://www.w3.org/2000/01/rdf-schema#label>	"Port city or town of the North Sea" .
<http://caligraph.org/ontology/Port_city_or_town_of_the_North_Sea>	<http://www.w3.org/2000/01/rdf-schema#subClassOf>	<http://caligraph.org/ontology/Port_city_or_town_of_the_Atlantic_Ocean> .