(QT (DQL ``) (QTC (S (NP (BASENP (NNP Differences)) (PP (IN in) (NP (NP (BASENP (NN evaporation) (NNS rates)) (COMMA ,) (BASENP (NN viscosity))) (CC and) (BASENP (NN weathering))))) (VP (VP (VBP provide) (BASENP (JJR greater) (NNS opportunities))) (S (VP (TO to) (VP (VB recover) (BASENP (NN oil))))))) (PERIOD .)) (DQR ''))