user: Question: Name the least tries for when w is 4
Columns: ['Team', 'P', 'W', 'D', 'L', 'Tries for', 'Tries against', 'Try diff', 'Points for', 'Points against', 'Points diff', 'Pts']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'text', 'real', 'real', 'text', 'real']
Sample row: ['Northampton Saints', 5.0, 5.0, 0.0, 0.0, 28.0, 12.0, '+16', 207.0, 88.0, '+119', 10.0]
SQL:

assistant: SELECT MIN("Tries for") FROM "Table" WHERE "W" = 4.0;