(S (S (BASENP (NNP Kiir)) (VP (VBD said) (PP (IN in) (BASENP (DT a) (NN press) (NN conference))))) (QT (DQL ``) (QTC (S (BASENP (NN Twenty-one) (NNS passengers)) (VP (VP (VBD were) (VP (VBN killed))) (CC and) (VP (NP (QP (CC either) (BASENP (NN two) (CC or) (NN three))) (BASENP (NN crew) (NNS members)))))) (PERIOD .)) (DQR '')))