Task: Question Understanding
Input (English): Question: An escalator at a shopping mall is 10 m long and moves at a constant speed of 0.5 m/s. If Josà¤¥à¤Š steps onto the escalator at the bottom while it is moving, how long will it take him to travel the 10 m? (A) 5 s (B) 10 s (C) 15 s (D) 20 s?
Output (English): escalator, 10, m, long, moves, constant, speed, 0.5, m/s., escalator, long, will, travel, 10, m?