(SINV (SINV (QT (DQL ``) (QTC (S (BASENP (DT The) (NN missile)) (VP (VBD appeared) (S (VP (TO to) (VP (VB have) (VP (VBN been) (VP (VBN fired) (PP (IN by) (BASENP (DT a) (NN drone)))))))))) (COMMA ,)) (DQR '')) (SINV (VP (VBD said)) (BASENP (DT a) (JJ Pakistani) (NN intelligence) (NN official)))) (PERIOD .))