Task: Question Answering
Input (English): Problem: a man can row at 5 kmph in still water . if the velocity of current is 1 kmph and it takes him 1 hour to row to a plce and come back , how far is the place ? 
Options: a ) 2 km , b ) 2.4 km , c ) 2.5 km , d ) 3.4 km , e ) none
Output (English): b