Task: Question Answering
Input (English): Problem: in one hour , a boat goes 14 km / hr along the stream and 8 km / hr against the stream . the speed of the boat in still water ( in km / hr ) is : 
Options: a ) 14 km / hr , b ) 13 km / hr , c ) 12 km / hr , d ) 11 km / hr , e ) 10 km / hr
Output (English): d