user: Question: What capacity opened lessed than 1937 and is located in the region of Champagne-Ardenne?
Columns: ['Stadium', 'Capacity', 'City', 'Region', 'Home Team', 'Opened']
Types: ['text', 'real', 'text', 'text', 'text', 'real']
Sample row: ['Stade de France', 81338.0, 'Paris', 'Île-de-France', 'France national football team', 1998.0]
SQL:

assistant: SELECT "Capacity" FROM "Table" WHERE "Opened" < 1937.0 AND "Region" = 'Champagne-Ardenne';