user: Question: Which Visitor is listed as having a Date of December 17?
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Record']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['November 15', 'Chicago Black Hawks', '1–1', 'Boston Bruins', '0–0–1']
SQL:

assistant: SELECT "Visitor" FROM "Table" WHERE "Date" = 'December 17';