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Fort Storage has warehouses in Winnipeg , Saskatoon , Airdrie , and Guelph .
 Winnipeg, Saskatoon, Airdrie
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Winnipeg, Saskatoon, Airdrie