( ( ( ( Work , ) ( ( a form ) ( of energy ) ) ) , ) ( ( is ( force ( times distance ) ) ) . ) )
(ROOT (S (NP (NP (NN Work)) (, ,) (NP (NP (DT a) (NN form)) (PP (IN of) (NP (NN energy)))) (, ,)) (VP (VBZ is) (NP (NN force) (NNS times) (NN distance))) (. .)))
Work, a form of energy, is force times distance.
(ROOT (S (NP (NNP Force) (NNS times) (NN distance)) (VP (VBZ is) (NP (NP (DT the) (NN equation)) (PP (IN for) (NP (NN work))))) (. .)))