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She also credits architect and Knoll designer Eero Saarinen as an important contributor to burgeoning color variation in midcentury design .
 person: Knoll; person: Eero Saarinen
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: Knoll, Eero Saarinen 
Answer:
 person: Knoll; person: Eero Saarinen