Task: Question Answering
Input (English): Problem: how much time will a train of length 200 m moving at a speed of 72 kmph take to cross another train of length 300 m , moving at 36 kmph in the same direction ? 
Options: a ) 50 sec , b ) 26 sec , c ) 80 sec , d ) 82 sec , e ) 81 sec
Output (English): a