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He strongly disagreed with Niels Bohr 's instrumentalism and supported Albert Einstein 's realist approach to scientific theories about the universe .
 person: Niels Bohr; person: Albert Einstein
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: Niels Bohr, Albert Einstein 
Answer:
 person: Niels Bohr; person: Albert Einstein