(S (S (BASENP (NNS Authorities)) (VP (VBP are) (VP (VBG continuing) (S (VP (TO to) (VP (VB search) (PP (IN for) (NP (BASENP (NN three) (NNS people)) (SBAR (WHNP (WP who)) (S (VP (VP (VP (VBP are) (ADVP (RB still))) (ADJP (JJ missing))) (PP (IN after) (BASENP (DT the) (NN disaster)))))))))))))) (PERIOD .))