(S (S (NP (BASENP (NNP General) (NNPS Motors) (NNP Corporation)) (PRN (LRB -LRB-) (BASENP (NNP GM)) (RRB -RRB-))) (VP (VP (VBD announced) (PP (IN on) (BASENP (NNP Wednesday)))) (SBAR (IN that) (S (BASENP (PRP it)) (VP (VP (VBD saw) (NP (BASENP (DT a) (NN 45) (NN %) (NN drop)) (PP (IN in) (NP (BASENP (NNP United) (NNPS States) (NN vehicle) (NNS sales)) (PP (IN for) (BASENP (PRPD its) (NNS cars))))))) (PP (IN in) (BASENP (NNP March)))))))) (PERIOD .))