(S (S (S (BASENP (NN Today)) (VP (VBD was) (NP (BASENP (DT a) (JJ mixed) (NN day)) (PP (IN for) (BASENP (DT the) (JJ financial) (NN sector)))))) (COMMA ,) (S (S (BASENP (NN Drug) (NNS makers)) (VP (VBD had) (BASENP (DT some) (NNS gains)))) (CC and) (SINV (ADVP (RB so)) (SINV (VP (MD did)) (NP (NP (BASENP (NNP General) (NNP Motors)) (CC and) (BASENP (NNP Berkshire) (NNP Hathaway))) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VBD helped) (S (BASENP (DT the) (NNS indexes)) (VP (VB gain))))))))))) (PERIOD .))