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Coakley later played in the Football League for Arsenal , and in the North American Soccer League for the Detroit Cougars , before returning to Scotland to play with Greenock Morton .
 Coakley, Arsenal, North American Soccer League, Detroit Cougars, Greenock Morton
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Coakley, Arsenal, North American Soccer League, Detroit Cougars, Greenock Morton