( Energy ( ( may ( occur ( in ( ( the form ) ( of ( ( heat , ) ( light ( , ( movement ( , ( sound ( , ( or radiation ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Energy)) (VP (MD may) (VP (VB occur) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NP (NN heat)) (, ,) (NP (NN light) (, ,) (NN movement) (, ,) (NN sound) (, ,) (CC or) (NN radiation)))))))) (. .)))
Energy may occur in the form of heat, light, movement, sound, or radiation.
(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))))) (. .)))