(S (S (BASENP (NNP Vice-President) (NNP Dick) (NNP Cheney)) (VP (VP (VBD directed) (BASENP (DT the) (NNP U.S.) (NN envoy))) (S (VP (TO to) (VP (VP (VP (VB walk) (PRT (RP out))) (BASENP (NNP Thursday))) (COMMA ,) (PP (IN in) (NP (BASENP (NN response)) (PP (TO to) (NP (NP (BASENP (NNS comments)) (PP (IN by) (BASENP (NNP Canadian) (NNP Prime) (NNP Minister) (NNP Paul) (NNP Martin)))) (PP (IN on) (BASENP (NNP Thursday)))))))))))) (PERIOD .))