user: Question: what is the least amount of milk cattle in Ontario
Columns: ['Province', 'Number of Dairy Farms', 'Number of Dairy Cows', 'Production (hectolitres)', 'Dairy Cows per Farm', 'Production (hectolitres) per Farm']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['British Columbia', 512.0, 70500.0, 6766330.0, 138.0, 13215.0]
SQL:

assistant: SELECT MIN("Number of Dairy Cows") FROM "Table" WHERE "Province" = 'Ontario';