( ( One horsepower ) ( ( equals ( ( 33,000 foot-pounds ) ( of ( work ( per minute ) ) ) ) ) ; ) )
(ROOT (S (NP (CD One) (NN horsepower)) (VP (VBZ equals) (NP (NP (CD 33,000) (NNS foot-pounds)) (PP (IN of) (NP (NP (NN work)) (PP (IN per) (NP (NN minute))))))) (: ;)))
One horsepower equals 33,000 foot-pounds of work per minute;
(ROOT (S (NP (DT A) (NN horsepower)) (VP (VBZ is) (ADJP (JJ equal) (PP (TO to) (NP (NP (DT the) (NN amount)) (PP (IN of) (NP (NN work)))))) (SBAR (S (NP (DT a) (NN horse)) (VP (MD can) (VP (VB do) (PP (IN in) (NP (CD 1) (NN minute)))))))) (. .)))