(SINV (SINV (S (NP (BASENP (DT The) (NN shutdown)) (PP (IN of) (BASENP (DT the) (NNP Prudhoe) (NNP Bay) (NN oil) (NN field)))) (QT (DQL ``) (VP (VP (VBD caught) (BASENP (NNS traders))) (PP (IN by) (BASENP (NN surprise)))) (DQR ''))) (COMMA ,) (SINV (VP (VBZ says)) (NP (BASENP (NNP Victor) (NNP Shum)) (COMMA ,) (NP (BASENP (DT an) (NN energy) (NN analyst)) (PP (IN in) (BASENP (NNP Singapore))))))) (PERIOD .))