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An Independence activist When Sundaram heard Gandhi delivering a speech in Madras in April 1915 , he instantly decided to give up his studies and to follow Gandhi as a disciple .
 person: Gandhi; location: Madras; person: Gandhi
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: Gandhi, Madras, Gandhi 
Answer:
 person: Gandhi; location: Madras; person: Gandhi