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According to TFOT vice-chairman Yiong Cong-ziin ( 楊長鎮 ) , he said “ Tibetans believed the Chinese and believed in the 17-point agreement they signed with China in the 1950s , but the Chinese broke their promises and imposed harsh measures on freedom and religion in Tibet .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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