Task: Question Answering
Input (English): Problem: an woman sitting in a train which is travelling at 25 kmph observes that a goods train travelling in a opposite direction , takes 3 seconds to pass him . if the goods train is 140 m long , find its speed . 
Options: a ) 141 , b ) 142 , c ) 143 , d ) 144 , e ) 145
Output (English): c