Task: Question Answering
Input (English): Problem: a person can row at 10 kmph in still water . if the velocity of the current is 2 kmph and it takes him 15 hour to row to a place and come back , how far is the place ? 
Options: a ) 24 km , b ) 30 km , c ) 48 km , d ) 72 km , e ) 15 km
Output (English): d