( ( ( The amount ) ( of work ) ) ( ( is ( force ( times ( ( the distance ) ( ( the force ) ( is exerted ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN amount)) (PP (IN of) (NP (NN work)))) (VP (VBZ is) (NP (NP (NN force)) (PP (CC times) (NP (NP (DT the) (NN distance)) (SBAR (S (NP (DT the) (NN force)) (VP (VBZ is) (VP (VBN exerted))))))))) (. .)))
The amount of work is force                times the distance the force is exerted.
(ROOT (S (NP (NNP Force) (NNS times) (NN distance)) (VP (VBZ is) (NP (NP (DT the) (NN equation)) (PP (IN for) (NP (NN work))))) (. .)))