user: Question: What is Balls, when Venue is "Bristol", and when Score is "104*"?
Columns: ['Name', 'Score', 'Balls', 'Venue', 'Date']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['R Dravid', '104*', 109.0, 'Bristol', '23 May 1999']
SQL:

assistant: SELECT "Balls" FROM "Table" WHERE "Venue" = 'Bristol' AND "Score" = '104*';