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president clinton is expected to sign a bill today granting china permanent normal trade relations with the united states .
 china, the united states, president, president clinton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 china, the united states, president, president clinton