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In the summer of 2009 , Loth worked with the wide receiver s as a guest coach for the Saskatchewan Roughriders , who advanced to the 2009 Grey Cup in the Canadian Football League .
 Loth, Saskatchewan Roughriders, Canadian Football League
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Loth, Saskatchewan Roughriders, Canadian Football League