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China expressed hopes that both sides would keep the dialogue alive while officials in Moscow and London called for patience in resolving the complex impasse .
 China, both sides, Moscow, London, officials in Moscow and London
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 China, both sides, Moscow, London, officials in Moscow and London