(S (S (BASENP (PRP It)) (VP (VBZ is) (VP (VBN thought) (SBAR (IN that) (S (BASENP (DT no) (JJ other) (NN vehicle)) (VP (VBD was) (VP (VBN involved) (PP (IN in) (BASENP (DT the) (NN incident)))))))))) (PERIOD .))