(S (S (PP (IN At) (BASENP (NNP Sea-Tac) (NNP Airport))) (COMMA ,) (S (BASENP (DT three) (NNS terminals)) (VP (VBD were) (VP (VP (VP (VBN shut) (PRT (RP down))) (BASENP (NN overnight))) (PP (JJ due) (PP (TO to) (BASENP (DT the) (NN storm)))))))) (PERIOD .))