The first class passengers are shown to their rooms by flashlight, because the engines are being changed and the electrical power is off.
(The first class passengers; are shown; to their rooms; by flashlight; because the engines are being changed and the electrical power is off) (the engines; are being changed; ) (the electrical power; is; off)
The first class passengers the engines the electrical power
are shown are being changed is
to their rooms by flashlight because the engines are being changed and the electrical power is off
off