user: Question: What year had an attendance of 90,000?
Columns: ['Year', 'Champion', 'Runner-Up', 'Result', 'Date', 'Venue', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1944.0, 'Dresdner SC', 'Luftwaffen-SV Hamburg', '4-0', '18 June 1944', 'Berlin', '70,000']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Attendance" = '90,000';