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I called to change my departure time by a few hours , {@americanair@} supervisor was extremely rude and belittling me , and hung up on me . Worst experience ever
 americanair, supervisor
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 americanair, supervisor