Task: Question Answering
Input (English): Problem: stalin and heather are 20 miles apart and walk towards each other along the same route . stalin walks at constant rate that is 1 mile per hour faster than heather ' s constant rate of 5 miles / hour . if heather starts her journey 20 minutes after stalin , how far from the original destination has heather walked when the two meet ? 
Options: a ) 4 miles , b ) 6 miles , c ) 9 miles , d ) 10 miles , e ) 12 mile
Output (English): a