user: Question: Which average S.R. has an Average of 39.13 and Balls Faced larger than 318?
Columns: ['Name', 'Innings', 'Runs Scored', 'Balls Faced', 'Average', 'S.R.']
Types: ['text', 'real', 'real', 'real', 'real', 'real']
Sample row: ['Adam Gilchrist (wk)', 8.0, 313.0, 318.0, 39.13, 98.43]
SQL:

assistant: SELECT "S.R." FROM "Table" WHERE "Average" = 39.13 AND "Balls Faced" > 318.0;