(QT (DQL ``) (QTC (S (NP (BASENP (DT Some)) (PP (IN of) (NP (BASENP (DT the) (NN problem)) (PP (IN of) (BASENP (NN erosion)))))) (VP (VBZ is) (VP (VP (VBN created) (PP (IN by) (BASENP (PRPD our) (NNS people)))) (COMMA ,) (PP (IN by) (NP (BASENP (PRPD our) (NN attitude)) (PP (TO to) (BASENP (NN waste) (NN disposal)))))))) (PERIOD .)) (DQR ''))