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Robert Barrier ( 21 December 1907 , Bellegarde-sur-Valserine - 7 December 1955 ) was a French politician .
 Bellegarde-sur-Valserine
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Bellegarde-sur-Valserine