( that ( ( use ( ( the electricity ) ( to ( ( teach ( different lessons ) ) ( about energy ) ) ) ) ) . ) )
(ROOT (S (NP (DT that)) (VP (VBP use) (S (NP (DT the) (NN electricity)) (VP (TO to) (VP (VB teach) (NP (JJ different) (NNS lessons)) (PP (IN about) (NP (NN energy))))))) (. .)))
that use the electricity to teach different lessons about energy.
(ROOT (S (NP (DT A) (NN person)) (VP (VBZ uses) (NP (JJ mechanical) (NN energy) (S (VP (TO to) (VP (VB pedal) (NP (DT a) (NN bicycle))))))) (. .)))