The lights will come on when a human effort is made to use the switch that permits the electric current to flow to the electric light globe.
(The lights; will come; on when a human effort is made) (the switch; permits; to flow to the electric light globe) (the electric current; to flow; to the electric light globe)
The lights the switch the electric current
will come permits to flow
on when a human effort is made
to flow to the electric light globe
to the electric light globe