Task: Question Answering
Input (English): Problem: a boat goes 100 km downstream in 10 hours , and 60 m upstream in 15 hours . the speed of the stream is ? 
Options: a ) 3 , b ) 22 1 / 4 , c ) 22 1 / 2 , d ) 22 1 / 1 , e ) 22 1 / 3
Output (English): a