Task: Question Answering
Input (English): Problem: in traveling from a dormitory to a certain city , a student went 1 / 4 of the way by foot , 1 / 2 of the way by bus , and the remaining 10 kilometers by car . what is the distance , in kilometers , from the dormitory to the city ? 
Options: a ) 10 , b ) 45 , c ) 30 , d ) 20 , e ) 40
Output (English): e