Task: Question Understanding
Input (English): Question: Tobias rode his bike on a road for a 2 hr period. On average, he passed a 1 km marker every 3 min during this period. Which of the following was his average speed for this 2 hr period? (A) 10 km/hr (B) 15 km/hr (C) 20 km/hr (D) 25 km/hr?
Output (English): rode, bike, 2, hr, 1, km, marker, 3, min, average, speed, 2, hr