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The University Health Network ( UHN ) is Canada ’s largest academic medical centre , comprising four major teaching hospitals ( Toronto Western Hospital , Toronto General Hospital , Princess Margaret Cancer Centre , Toronto Rehabilitation Institute ) and a strategic alliance with the Toronto Mount Sinai Hospital .
 Health Network, Toronto, Hospital, Toronto, Hospital, Toronto, Toronto Mount Sinai Hospital
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Health Network, Toronto, Hospital, Toronto, Hospital, Toronto, Toronto Mount Sinai Hospital