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BEIJING  Aug. 29 ( Xinhua ) -- The  Beihai Fleet  of the Chinese People's Liberation Army ( PLA ) Navy will conduct a live - ammunition drill in the Yellow Sea from Sept. 1 to 4 China's Ministry of National Defense announced Sunday .
 city of headquarters: BEIJING, Beihai Fleet
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 city of headquarters: BEIJING, Beihai Fleet