user: Question: When regions center has a rank less than 11, what is the greatest number o floors?
Columns: ['Rank', 'Name', 'Height ft (m)', 'Floors', 'Year']
Types: ['real', 'text', 'text', 'real', 'real']
Sample row: [1.0, 'AT&T Building', '617 (188)', 33.0, 1994.0]
SQL:

assistant: SELECT MAX("Floors") FROM "Table" WHERE "Name" = 'regions center' AND "Rank" < 11.0;