user: Question: What is the lowest amount of floors in the building completed before 1970 ranked more than 14?
Columns: ['Rank', 'Building', 'Height', 'Floors', 'Completed']
Types: ['real', 'text', 'text', 'real', 'real']
Sample row: [1.0, 'Fenwick Tower (Residential)', '98m (322ft)', 32.0, 1971.0]
SQL:

assistant: SELECT MIN("Floors") FROM "Table" WHERE "Completed" < 1970.0 AND "Rank" > 14.0;