Task: Question Answering
Input (English): Problem: a cyclist rides a bicycle 9 km at an average speed of 11 km / hr and again travels 11 km at an average speed of 9 km / hr . what is the average speed for the entire trip ? 
Options: a ) 9.3 , b ) 9.6 , c ) 9.8 , d ) 10.1 , e ) 10.3
Output (English): c