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With his publisher ' Urbi et Orbi ' he signed a contract stating that he never would earn more than 1000 guilder s and that he was not allowed to get another publisher until 1950 .
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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:
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