user: Question: The building with 48 floors has an address in Las Vegas of what?
Columns: ['Name', 'Street address', 'Years as tallest', 'Height ft (m)', 'Floors']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['Castaways Hotel and Casino', '2800 Fremont Street', '1954–1961', '216 (66)', 19.0]
SQL:

assistant: SELECT "Street address" FROM "Table" WHERE "Floors" = 48.0;