user: Question: How many weeks on top was OMC?
Columns: ['Volume:Issue', 'Issue Date(s)', 'Weeks on Top', 'Song', 'Artist']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['64:18', '16 December 1996 - 6 January ¶', '4 ¶', '" Head over Feet "', 'Alanis Morissette']
SQL:

assistant: SELECT "Weeks on Top" FROM "Table" WHERE "Artist" = 'OMC';