(S (S (BASENP (DT An) (NNP Amtrak) (NN train)) (VP (VP (VP (VBD collided) (PP (IN with) (BASENP (DT a) (VBN parked) (NNP Norfolk) (NNP Southern) (NN freight) (NN train)))) (PP (IN in) (BASENP (NNP Chicago)))) (PP (IN on) (BASENP (NNP Friday))))) (PERIOD .))