user: Question: What was the host city in years where the host school was École de technologie supérieure?
Columns: ['Year', 'Host City', 'Host School', 'Champion', 'Second Place', 'Third Place']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1988.0, 'East Lansing, Michigan', 'Michigan State University', 'University of California, Berkeley', 'University of New Hampshire', 'University of Akron']
SQL:

assistant: SELECT "Host City" FROM "Table" WHERE "Host School" = 'École de technologie supérieure';