( ( ( Work , ) ( we ( define ( as ( ( a force ) ( times ( a distance ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Work) (, ,) (S (NP (PRP we)) (VP (VB define) (PP (IN as) (NP (NP (DT a) (NN force)) (PP (CC times) (NP (DT a) (NN distance)))))))) (. .)))
Work, we define as a force times a 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))))) (. .)))