(S (S (BASENP (NNS Eyewitnesses)) (VP (VP (VP (VBD described) (BASENP (DT the) (NN collision))) (PP (IN as) (QT (DQL ``) (ADJP (JJ brutal)) (DQR '')))) (COMMA ,) (PP (IN with) (S (BASENP (NNS passengers)) (VP (VBG being) (VP (VP (VBN thrown) (QT (DQL ``) (ADVP (RB violently)) (DQR ''))) (PP (IN around) (BASENP (DT the) (NNS carriages))))))))) (PERIOD .))