(S (S (NP (BASENP (DT The) (NN driver)) (PP (IN of) (BASENP (DT the) (NN train)))) (VP (VBZ has) (VP (VBN been) (VP (VBN arrested) (PP (IN because) (PP (IN of) (NP (BASENP (NN suspicion)) (PP (IN of) (BASENP (NN negligence)))))))))) (PERIOD .))