(S (S (NP (BASENP (DT The) (NN cutting)) (PP (IN of) (BASENP (DT the) (NNS lines)))) (VP (ADVP (RB then)) (VP (VP (VBD tripped) (PRT (RP out))) (BASENP (DT the) (NN track) (NN current))))) (PERIOD .))