user: Question: What date was the attendance 22000?
Columns: ['Date', 'Team #1', 'Res.', 'Team #2', 'Competition', 'Attendance', 'Remarks']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['20 November 2005', 'Abumoslem', '1–1', 'Persepolis', '2005–06 Iran Pro League', 22000.0, 'Persepolis tie in Mashhad']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Attendance" = 22000.0;