user: Question: what is the lowest height (ft) for messeturm and more than 55 floors?
Columns: ['Rank', 'Name', 'City', 'Height (m)', 'Height (ft)', 'Floors']
Types: ['real', 'text', 'text', 'real', 'real', 'real']
Sample row: [1.0, 'Commerzbank Tower', 'Frankfurt', 259.0, 849.7, 56.0]
SQL:

assistant: SELECT MIN("Height (ft)") FROM "Table" WHERE "Name" = 'messeturm' AND "Floors" > 55.0;