Input (grade 13): To minimize the time Knowles spent on the bull, the director shot the sequence at twelve frames per second (see frame rate) and Knowles sang twice as quickly, but it was n't until 4:00 am that they completed work.
Output (grade 7): To minimize the time Knowles spent on the bull, the director shot the sequence at twelve frames per second (see frame rate) and Knowles sang twice as quickly, but it was not until 4:00 a.m. that they completed work.