user: Question: When 8 is the rank what is the Saturday August 21st?
Columns: ['Rank', 'Rider', 'Sat 21 Aug', 'Mon 23 Aug', 'Tues 24 Aug', 'Wed 25 Aug', 'Thurs 26 Aug', 'Fri 27 Aug', 'Sat 29 Aug']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Dan Sayle 250cc Honda', 'Untimed Practice', "23' 34.55 96.022mph", "20' 08.34 112.409mph", "19' 45.20 114.603mph", "19' 43.42 114.776mph", "19' 25.91 116.500mph", '—— No Time']
SQL:

assistant: SELECT "Sat 21 Aug" FROM "Table" WHERE "Rank" = 8.0;