user: Question: What was the largest attendance at the Rheinstadion?
Columns: ['Week', 'Date', 'Kickoff', 'Opponent', 'Final score', 'Team record', 'Game site', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'Sunday, April 13', '3:00 p.m.', 'at London Monarchs', 'L 7–14', '0–1', 'Stamford Bridge', 10718.0]
SQL:

assistant: SELECT MAX("Attendance") FROM "Table" WHERE "Game site" = 'Rheinstadion';