user: Question: When were the Cleveland Browns the visiting team?
Columns: ['Date', 'Visiting Team', 'Final Score', 'Host Team', 'Stadium']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['November 5', 'Dallas Cowboys', '13-3', 'Washington Redskins', 'Robert F. Kennedy Memorial Stadium']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Visiting Team" = 'Cleveland Browns';