user: Question: Who was the parent on the order of 6?
Columns: ['Order', 'Name dates', 'Princess Royal from (date) to (date)', 'Parent', 'Date married', 'Husband dates']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Mary, Princess Royal 1631–1660', '1642–1660', 'Charles I 1600–1649', '1641', 'William II, Prince of Orange 1626–1650']
SQL:

assistant: SELECT "Parent" FROM "Table" WHERE "Order" = 6.0;