user: Question: What is the U.S. rap ranking in 2000 of the U.S. 105 single?
Columns: ['Year', 'U.S.', 'U.S. R&B', 'U.S. Rap', 'Album']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1998.0, '—', '106', '—', 'How You Luv That Vol. 2']
SQL:

assistant: SELECT "U.S. Rap" FROM "Table" WHERE "Year" = 2000.0 AND "U.S." = '105';