(S (S (BASENP (DT The) (NN crew)) (VP (VP (VP (VP (VBD brought) (BASENP (DT the) (NN submarine))) (PP (TO to) (BASENP (NN surface)))) (ADVP (RB quickly))) (PP (IN through) (BASENP (DT the) (NN ice))))) (PERIOD .))