( ( MCH .17 ) ( ( ( ( Take apart ) ( a ( compound machine ) ) ) ( to ( ( determine ( the ( simple machines ) ) ) within ) ) ) . ) )
(ROOT (S (NP (NNP MCH) (CD .17)) (VP (VBP Take) (PRT (RP apart)) (NP (DT a) (JJ compound) (NN machine)) (S (VP (TO to) (VP (VB determine) (NP (DT the) (JJ simple) (NNS machines)) (PP (IN within)))))) (. .)))
MCH.17 Take apart a compound machine to determine the simple machines within.
(ROOT (S (NP (NNS Scissors)) (VP (VBP are) (NP (JJ compound) (NNS machines))) (. .)))