Task: Question Answering
Input (English): Problem: a man whose speed is 8 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 3 kmph, find his average speed for the total journey ?
Options: a. 1 kmph, b. 5 kmph, c. 6 kmph, d. 4 kmph, e. 6.8 kmph
Output (English): e