The lunar month is longer than the sidereal month because the Moon completes its cycle of phases before it completes a full orbit around the Earth.
(The lunar month; is; longer than the sidereal month; because the Moon completes its cycle of phases) (the Moon; completes; its cycle of phases; T:before it completes a full orbit around the Earth) (it; completes; a full orbit) (The lunar month; is longer than; the sidereal month)
The lunar month the Moon it The lunar month
is completes completes is longer than
longer than the sidereal month because the Moon completes its cycle of phases
its cycle of phases T:before it completes a full orbit around the Earth
a full orbit
the sidereal month