Task: Question Answering
Input (English): Problem: a ladder learning against a wall makes an angle of 60 ° with the ground . if the length of the ladder is 19 m , find the distance of the foot of the ladder from the wall . 
Options: a ) 9 m , b ) 9.5 m , c ) 10.5 m , d ) 12 m , e ) none
Output (English): b