(S (S (BASENP (NNP U.S.) (JJ crude) (NN oil) (NNS prices)) (VP (VBD reached) (NP (NP (BASENP (DOLLAR US$) (NN 66.47)) (BASENP (DT a) (NN barrel))) (COMMA ,) (NP (BASENP (DT a) (NN level)) (VP (ADVP (RB not)) (VP (VBN seen) (PP (IN since) (BASENP (JJ last) (NNP November))))))))) (PERIOD .))