user: Question: What is the birth date of the woman who ceased to be Queen on 18 Jun 1297?
Columns: ['Father', 'Birth', 'Marriage', 'Became Queen', 'Ceased to be Queen', 'Death', 'Spouse']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Otto II, Margrave of Meissen', '1160+', '1178', '1198', '1199', '2 Feb 1211', 'Ottokar I']
SQL:

assistant: SELECT "Birth" FROM "Table" WHERE "Ceased to be Queen" = '18 Jun 1297';