user: Question: What is the Original Artis of the Track with a Length of 2:38?
Columns: ['Track', 'Song Title', 'Writer(s)', 'Original Artist', 'Original Release', 'Length']
Types: ['text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['1', '" Why Baby Why "', 'Darrell Edwards, George Jones', 'George Jones', 1955.0, '2:18']
SQL:

assistant: SELECT "Original Artist" FROM "Table" WHERE "Length" = '2:38';