(S (S (NP (DT An) (QT (DQL ``) (BASENP (JJ Asian) (NN security) (NN source)) (DQR ''))) (VP (VP (VBD stated) (SBAR (IN that) (S (BASENP (DT the) (NNS missiles)) (VP (MD may) (VP (VB have) (VP (VBN been) (VP (VP (VBN launched) (PP (IN in) (NP (BASENP (DT the) (NN direction)) (PP (IN of) (BASENP (NNP China)))))) (PP (IN by) (BASENP (NN mistake)))))))))) (CONJP (COMMA ,) (CC and)) (VP (VBD landed) (PP (ADVP (RB just)) (PP (IN inside) (BASENP (DT the) (ADJP (JJ North) (JJ Korean)) (NN border))))))) (PERIOD .))