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A public lecture at University of Toronto on February 21 , 2007 , on the topic of global warming , led to a crash of the ticket sales website within minutes of opening .
 University of Toronto
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 University of Toronto