why , for instance , good things happen to bad people 
(ROOT (SBAR (WHADVP (WRB why)) (, ,) (S (PP (IN for) (NP (NN instance))) (, ,) (NP (JJ good) (NNS things)) (VP (VBP happen) (PP (IN to) (NP (JJ bad) (NNS people)))))))
(ROOT (SBAR (WHADVP (WRB )) (, ) (S (PP (IN ) (NP (NN ))) (, ) (NP (JJ ) (NNS )) (VP (VBP ) (PP (IN ) (NP (JJ ) (NNS )))))))