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Through his criticism of Newton 's theories of space and time , he foreshadowed Einstein 's theory of relativity .
 person: Newton; person: 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: Newton, Einstein 
Answer:
 person: Newton; person: Einstein