user: Question: Who was the visitor for Chicago Black Hawks on May 6?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Record']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['April 29', 'Chicago Black Hawks', '3–8', 'Montreal Canadiens', '0-1']
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Home" = 'Chicago Black Hawks' AND "Date" = 'May 6';