Task: Question Understanding
Input (English): Question: The Sun appears to move across the sky each day, rising in the east and setting in the west. What causes this apparent motion? (A) the rotation of Earth on its axis (B) the revolution of the Sun around Earth (C) the Earth’s distance from the Sun (D) the properties of Earth’s atmosphere?
Output (English): Sun, across, sky, rising, east, setting, west., causes, motion?