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Smith has also played for the San Francisco 49ers , San Diego Chargers and Miami Dolphins .
 San Francisco 49ers, San Diego Chargers, Miami Dolphins
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 San Francisco 49ers, San Diego Chargers, Miami Dolphins