user: Question: When did Motherwell win?
Columns: ['Season', 'Date', 'Winners', 'Finalists', 'Score']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1950–51', '28 October 1950', 'Motherwell', 'Hibernian', '3–0']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Winners" = 'Motherwell';