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An opposition coalesced around Chater and Mick Costello , but they were defeated at the 1987 Party Congress and subsequently founded the Communist Party of Britain .
 person: Chater; organization: Communist Party of Britain
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: Chater, Communist Party of Britain 
Answer:
 person: Chater; organization: Communist Party of Britain