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Heron was drafted by the Green Bay Packers in the third round of the 1966 college draft , and Vince Lombardi traded him as a replacement for a lineman in the St. Louis Cardinals who had been forced to retire due to a heart murmur .
 Heron, Green Bay Packers, Vince Lombardi, St. Louis Cardinals
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Heron, Green Bay Packers, Vince Lombardi, St. Louis Cardinals