When the plants run out of energy, they go back to the sun to get more.
(the plants; run; ) (they; go; back to the sun; to get more; T:When the plants run out of energy) Context(they go,List([35, 42))):(they; go to get; more)
they go,List([35, 42))
the plants they they
run go go to get
back to the sun to get more T:When the plants run out of energy
more