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Petrus Joseph Johannes ( Jan ) Mertens ( 14 July 1916 , Heerlen - 2 August 2000 , Oosterhout ) was a Dutch politician .
 person: Jan; person: Mertens; location: Heerlen; location: Oosterhout; location: Dutch
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Jan; person: Mertens; location: Heerlen; location: Oosterhout; location: Dutch