Assertion: mercury's motion | /r/HasProperty | different
Facets:
value: very
type: DEGREE
value: at various times of the year
type: TEMPORAL
Source sentences:
text: To summarize, during one of Mercury's years the AVERAGE motion of the Sun is two degrees per day to the west, or one-third of the stars' motion of six degrees per day, making the day three times longer than the rotation period; but at various times of the year, the motion can be very different.