user: Question: How many positions do the players of Chicago Black Hawks play in?
Columns: ['Pick #', 'Player', 'Position', 'Nationality', 'NHL team', 'College/junior/club team']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [15.0, 'Ken Baird', 'Defence', 'Canada', 'California Golden Seals', 'Flin Flon Bombers (WCHL)']
SQL:

assistant: SELECT COUNT("Position") FROM "Table" WHERE "NHL team" = 'Chicago Black Hawks';