(S (S (S (NP (BASENP (DT All) (NNP Amtrak) (NNS trains)) (PP (IN between) (BASENP (NNP Chicago) (CC and) (NNP Michigan)))) (VP (VBP are) (VP (ADVP (RB currently)) (VBN canceled)))) (SBAR (IN while) (S (BASENP (NNS workers)) (VP (VP (VP (VBP remove) (BASENP (DT the) (NN locomotive))) (PP (IN from) (BASENP (DT the) (NN scene)))) (CC and) (VP (VBP perform) (BASENP (DT any) (VBN needed) (NNS repairs))))))) (PERIOD .))