388766
Approved by the Tenth Party Congress and a national referendum , the 1971 constitution detailed for the first time the structure of the BCP ( highly centralized , in keeping with policy after 1968 ) and its role in leading society and the state .
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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:  
Answer:
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