( ( ( Identify ( different forms ) ) ( of ( energy ( -LRB- ( ( ( e.g. , ) ( light ( , ( sound ( , heat ) ) ) ) ) -RRB- ) ) ) ) ) . )
(ROOT (NP (NP (JJ Identify) (JJ different) (NNS forms)) (PP (IN of) (NP (NP (NN energy)) (PRN (-LRB- -LRB-) (NP (NNP e.g.)) (, ,) (NP (NN light) (, ,) (NN sound) (, ,) (NN heat)) (-RRB- -RRB-)))) (. .)))
Identify different forms of energy (e.g., light, sound, heat).
(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))))) (. .)))