Task: Question Answering
Input (English): Problem: how long does a train 140 m long running at the speed of 72 km / hr takes to cross a bridge 132 m length ? 
Options: a ) 13.6 sec , b ) 12.1 sec , c ) 17.9 sec , d ) 16.8 sec , e ) 14.9 sec
Output (English): a