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He cast Amitabh Bachchan in Bandhe Haath ( 1973 ) when he was not yet a known name .
 person: Amitabh Bachchan
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: Amitabh Bachchan 
Answer:
 person: Amitabh Bachchan