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In 1807 , having obtained a writership to Bengal , he entered the East India College , then at Hertford Castle .
 organization: East India College
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: East India College 
Answer:
 organization: East India College