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Huub and Adelheid Kortekaas present themselves as artists duo since 1999 , although they actually have worked together since their marriage in 1969 .
 person: Huub; person: Kortekaas
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Huub, Kortekaas 
Answer:
 person: Huub; person: Kortekaas