user: Question: What is the average number of floors at 170 Fourth Avenue North?
Columns: ['Name', 'Street Address', 'Years as tallest', 'Height ft / m', 'Floors']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['First National Bank Building', '170 Fourth Avenue North', '1905–1908', '170 / 52', 12.0]
SQL:

assistant: SELECT AVG("Floors") FROM "Table" WHERE "Street Address" = '170 Fourth Avenue North';