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He was a chorister at King 's College , Cambridge under Boris Ord and Sir David Willcocks .
 organization: King 's College , Cambridge; person: Boris Ord; person: Sir David Willcocks
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: King 's College , Cambridge, Boris Ord, Sir David Willcocks 
Answer:
 organization: King 's College , Cambridge; person: Boris Ord; person: Sir David Willcocks