Task: Question Understanding
Input (English): Question: Why is it more difficult to see your shadow on a cloudy day than on a sunny day? (A) Clouds create multiple shadows. (B) There is very little direct sunlight on cloudy days. (C) It is more difficult for your eyes to focus on cloudy days. (D) Clouds cause the shadows to spread out and blend in with the ground.?
Output (English): difficult, see, shadow, cloudy, day