A sidereal day is the time that it takes the Earth to complete one rotation on its axis so that a particular star can be observed twice at the meridian that runs directly overhead.
(A sidereal day; is; the time that it takes the Earth to complete one rotation on its axis) (a particular star; can be observed; T:twice; L:at the meridian) (the meridian; runs directly; L:overhead)
A sidereal day a particular star the meridian
is can be observed runs directly
the time that it takes the Earth to complete one rotation on its axis
T:twice L:at the meridian
L:overhead