( ( ( Converts light ) ( to ( electrical energy ) ) ) . )
(ROOT (S (VP (VB Converts) (NP (NN light)) (PP (TO to) (NP (JJ electrical) (NN energy)))) (. .)))
Converts light to electrical energy.
(ROOT (S (NP (DT A) (JJ light) (NN bulb)) (VP (VBZ converts) (NP (JJ electrical) (NN energy)) (PP (TO to) (NP (JJ light) (CC and) (JJ thermal) (NN energy)))) (. .)))