(S (S (NP (BASENP (DT Those)) (SBAR (WHNP (WP who)) (S (VP (VBP do) (VP (VB take) (BASENP (NN party) (NNS pills))))))) (VP (VP (MD should) (RB not)) (VP (VP (VB mix) (BASENP (PRP them))) (PP (IN with) (NP (NP (BASENP (NN medication)) (COMMA ,) (BASENP (NNS drugs))) (CC or) (BASENP (NN alcohol))))))) (PERIOD .))