(SINV (SINV (QT (DQL ``) (QTC (S (BASENP (PRP It)) (VP (VP (VBZ 's) (BASENP (DT a) (JJ natural) (NN meteor))) (COMMA ,) (ADVP (RB definitely)))) (COMMA ,)) (DQR '')) (SINV (VP (VBD said)) (NP (BASENP (NNP Bill) (NNP Cooke)) (COMMA ,) (NP (BASENP (DT an) (NN astronomer)) (PP (IN at) (NP (BASENP (NNP NASA) (POS 's)) (BASENP (NNP Meteoroid) (NNP Environment) (NNP Office)))))))) (PERIOD .))