user: Question: What is the lengtho f track 16?
Columns: ['Track', 'Song title', 'Length', 'Composer(s)', 'Performance location(s)']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Disc A', 'Disc A', 'Disc A', 'Disc A', 'Disc A']
SQL:

assistant: SELECT "Length" FROM "Table" WHERE "Track" = '16';