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Norman " Norm " Grekin ( June 22 , 1930 – September 29 , 1981 ) was an American professional basketball player .
 person: Norm; person: Grekin
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: Norm, Grekin 
Answer:
 person: Norm; person: Grekin