user: Question: What type of structure is there at the American Tower Christmas?
Columns: ['Name', 'Pinnacle height', 'Structure type', 'Main use', 'Country', 'Town']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['SBA Towers Tower Hayneville', 'm (ft)', 'Guyed mast', 'VHF-UHF transmission', 'U.S.', 'Hayneville, Alabama']
SQL:

assistant: SELECT "Structure type" FROM "Table" WHERE "Name" = 'American Tower Christmas';