( ( Forms ( of energy ) ) ( ( include ( ( heat ( , ( light ( , ( sound ( , ( electricity ( , ( and chemical ) ) ) ) ) ) ) ) ) energy ) ) . ) )
(ROOT (S (NP (NP (NNS Forms)) (PP (IN of) (NP (NN energy)))) (VP (VBP include) (NP (NP (NN heat) (, ,) (NN light) (, ,) (NN sound) (, ,) (NN electricity) (, ,) (CC and) (NN chemical)) (NP (NN energy)))) (. .)))
Forms of energy include heat, light, sound, electricity, and chemical energy.
(ROOT (S (NP (NP (NNP Heat)) (, ,) (NP (NN light)) (, ,) (CC and) (NP (NN sound))) (VP (VBP are) (NP (NP (DT all) (JJ different) (NNS forms)) (PP (IN of) (NP (NN energy))))) (. .)))