user: Question: on what date was tie number 4?
Columns: ['Tie no', 'Home team', 'Score', 'Away team', 'Date']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['1', 'Enfield', '2–0', 'Hastings United', '21 November 1981']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Tie no" = '4';