user: Question: Name the games with marks of 21
Columns: ['Player', 'AFL debut', 'Games', 'Goals', 'Kicks', 'Handballs', 'Disposals', 'Marks', 'Tackles']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Nick Batchelor Category:Articles with hCards *', '—', '—', '—', '—', '—', '—', '—', '—']
SQL:

assistant: SELECT "Games" FROM "Table" WHERE "Marks" = '21';