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While a student at the Presidency College in Kolkata , he was sucked into the political movement of the late 60s and early 70s in Bengali campuses also known as the Naxal Movement .
 Presidency College, Kolkata
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Presidency College, Kolkata