<http://dbpedia.org/resource/Martin_Koopman__4>	<http://dbpedia.org/ontology/years>	"1991Z"^^<http://www.w3.org/2001/XMLSchema#gYear> .
<http://dbpedia.org/resource/Martin_Koopman__4>	<http://dbpedia.org/ontology/team>	<http://dbpedia.org/resource/SC_Cambuur> .
<http://dbpedia.org/resource/Martin_Koopman__4>	<http://dbpedia.org/ontology/years>	"1989Z"^^<http://www.w3.org/2001/XMLSchema#gYear> .