(S (S (S (BASENP (NN Four)) (VP (VBP are) (ADJP (JJ missing)))) (COMMA ,) (SBAR (IN while) (S (BASENP (NN three) (NNS bodies)) (VP (VBP have) (VP (VBN been) (VP (VBN recovered) (PP (IN by) (BASENP (DT the) (NNP South) (NNP China) (NNP Sea) (NNP Rescue) (NNP Bureau))))))))) (PERIOD .))