69184
He then specialised in Communist affairs and held the following positions : He retired from the diplomatic service in 1971 and was appointed Master of Corpus Christi College , Cambridge .
 organization: Corpus Christi; organization: Cambridge
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: Corpus Christi, Cambridge 
Answer:
 organization: Corpus Christi; organization: Cambridge