user: Question: What school did player number 21 play for?
Columns: ['Player', 'No.', 'Nationality', 'Position', 'Years in Toronto', 'School/Club Team']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Antonio Lang', '21', 'United States', 'Guard-Forward', '1999-2000', 'Duke']
SQL:

assistant: SELECT "School/Club Team" FROM "Table" WHERE "No." = '21';