Since the Earth's axis is tilted, an SPS orbiting over the equator wouldswing above or below the Earth's shadow during its daily orbit.
(the Earth's axis; is tilted; ) (an SPS; orbiting; T:over the equator) (the equator; wouldswing; L:above or below the Earth's shadow; T:during its daily orbit)
the Earth's axis an SPS the equator
is tilted orbiting wouldswing
T:over the equator
L:above or below the Earth's shadow T:during its daily orbit