(QT (DQL ``) (QTC (S (PP (IN In) (NP (BASENP (DT a) (ADJP (RB very) (JJ limited)) (NN number)) (PP (IN of) (BASENP (NNS cases))))) (S (BASENP (PRP they)) (VP (VBP have) (VP (VBN related) (PP (TO to) (NP (BASENP (JJ old) (JJ chemical) (NNS munitions)) (VP (VBN produced) (PP (IN before) (BASENP (NN 1990)))))))))) (PERIOD .)) (DQR ''))