Task: Question Answering
Input (English): Problem: how many seconds will a 400 meter long train take to cross a man walking with a speed of 3 km / hr in the direction of the moving train if the speed of the train is 63 km / hr ? 
Options: a ) 287 , b ) 288 , c ) 900 , d ) 277 , e ) 121
Output (English): c