user: Question: Who was Margaret of Brabant's spouse?
Columns: ['Name', 'Father', 'Birth', 'Marriage', 'Became Countess', 'Ceased to be Countess', 'Death', 'Spouse']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Beatrice of Brabant', 'Henry II, Duke of Brabant ( Leuven )', '1225', 'November 1247', 'November 1247', "6 June 1251 husband's death", '11 November 1288', 'William II']
SQL:

assistant: SELECT "Spouse" FROM "Table" WHERE "Name" = 'Margaret of Brabant';