Task: Question Answering
Input (English): Problem: sand is poured into a box so that the box is being filled at the rate of 4 cubic feet per hour . if the empty rectangular box is 7 feet long , 6 feet wide , and 2 feet deep , approximately how many hours does it take to fill the box ?
Output (English): 21', 'c ) 22', 'd ) 23', 'e ) 24'