user: Question: Who was the visiting team on April 6?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Record']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['April 1', 'Chicago Black Hawks', '3–4', 'Detroit Red Wings', '0-1']
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Date" = 'April 6';