user: Question: What is the highest amount of floors in Stockholm with a rank of 15?
Columns: ['Rank', 'Name', 'Location', 'Height m / ft', 'Floors']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['1', 'Turning Torso', 'Malmö', '190 / 623', 57.0]
SQL:

assistant: SELECT MAX("Floors") FROM "Table" WHERE "Location" = 'Stockholm' AND "Rank" = '15';