One sidereal day is the amount of time it takes for the Earth to rotate once as measured by a. the Sun.
(One sidereal day; is; the amount of time it takes) (the amount of time; takes; for the Earth to rotate once) (the Earth; to rotate; T:once)
One sidereal day the amount of time the Earth
is takes to rotate
the amount of time it takes
for the Earth to rotate once
T:once