(S (S (BASENP (DT The) (NN collision)) (VP (VBD saw) (S (NP (BASENP (DT the) (JJ first) (NN two) (NNS carriages)) (PP (IN of) (BASENP (NN one) (NN train)))) (VP (VBG being) (VP (VBN forced) (ADVP (ADVP (RB upwards) (PP (IN into) (BASENP (DT the) (NN air)))) (PP (IN over) (NP (BASENP (DT the) (JJ first) (NN carriage)) (PP (IN of) (BASENP (DT the) (JJ second) (NN train))))))))))) (PERIOD .))