user: Question: what is the minimum population canada 2011 census with seat of rcm being Cowansville
Columns: ['Regional County Municipality (RCM)', 'Population Canada 2011 Census', 'Land Area', 'Density (pop. per km2)', 'Seat of RCM']
Types: ['text', 'real', 'text', 'text', 'text']
Sample row: ['Acton', 15381.0, 'km2 (sqmi)', '26.5', 'Acton Vale']
SQL:

assistant: SELECT MIN("Population Canada 2011 Census") FROM "Table" WHERE "Seat of RCM" = 'Cowansville';