(QT (DQL ``) (QTC (S (BASENP (PRP We)) (VP (VBP 've) (VP (VBN seen) (NP (BASENP (DT an) (NN increase)) (PP (IN in) (NP (BASENP (DT the) (NN number)) (PP (IN of) (BASENP (JJ extreme) (JJ hot) (NNS days))))))))) (PERIOD .)) (DQR ''))