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Biography and Career Chauhan graduated from Indian Institute of Technology Bombay ( IIT Bombay ) with a bachelor 's degree in Mechanical Engineering in 1989 , after which he joined Indian Institute of Management Calcutta ( IIM Calcutta ) for an MBA .
 person: Chauhan; organization: Indian Institute of Technology Bombay; organization: Bombay; organization: Indian Institute of Management Calcutta; organization: Calcutta
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: Chauhan, Indian Institute of Technology Bombay, Bombay, Indian Institute of Management Calcutta, Calcutta 
Answer:
 person: Chauhan; organization: Indian Institute of Technology Bombay; organization: Bombay; organization: Indian Institute of Management Calcutta; organization: Calcutta