( ( Simply defined ) ( , ( ( kinetic energy ) ( ( is ( ( the energy ) ( of motion ) ) ) . ) ) ) )
(ROOT (S (S (VP (ADVP (RB Simply)) (VBN defined))) (, ,) (NP (JJ kinetic) (NN energy)) (VP (VBZ is) (NP (NP (DT the) (NN energy)) (PP (IN of) (NP (NN motion))))) (. .)))
Simply defined, kinetic energy is the energy of motion .
(ROOT (S (NP (NNP Motion)) (VP (MD can) (VP (VB be) (VP (VBN defined) (ADVP (RB simply)) (PP (IN as) (NP (NP (DT a) (NN change)) (PP (IN in) (NP (NN position)))))))) (. .)))