bludgeoning the audience over the head 
(ROOT (S (VP (VBG bludgeoning) (NP (DT the) (NN audience)) (PP (IN over) (NP (DT the) (NN head))))))
(ROOT (S (VP (VBG ) (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NN ))))))