( We ( ( measure ( ( the power ) ( of ( machines ( in ( units ( such ( as ( ( ( the Watt ) or ) horsepower ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VB measure) (NP (NP (DT the) (NN power)) (PP (IN of) (NP (NP (NNS machines)) (PP (IN in) (NP (NP (NNS units)) (PP (JJ such) (IN as) (NP (NP (DT the) (NN Watt)) (CC or) (NP (NN horsepower)))))))))) (. .)))
We measure the power of machines in units such as the Watt or horsepower .
(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)))))))) (. .)))