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Jon Melander is a retired American football offensive guard who played four seasons in the National Football League for the New England Patriots , the Cincinnati Bengals and the Denver Broncos .
 National Football League, New England Patriots, Cincinnati Bengals, Denver Broncos
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 National Football League, New England Patriots, Cincinnati Bengals, Denver Broncos