Assertion: planet's year | /r/HasProperty | the length of time
Facets:
Source sentences:
text: The tropical year is the length of time that the Sun, as viewed from the Earth, takes to return to the same position along the ecliptic (its path among the stars on the celestial sphere).
text: The sidereal year is the length of time that the Sun takes to return to the same position with respect to the stars of the celestial sphere.