(S (S (BASENP (PRP He)) (VP (VP (VP (VBD fell) (ADVP (RB seriously) (RBR ill))) (PP (IN on) (BASENP (DT the) (NNP September) (JJ 6th)))) (COMMA ,) (PP (IN during) (BASENP (PRPD his) (JJ presidential) (NN campaign))))) (PERIOD .))