hitting the audience over the head with a moral 
(ROOT (S (VP (VBG hitting) (NP (DT the) (NN audience)) (PP (IN over) (NP (DT the) (NN head))) (PP (IN with) (NP (DT a) (NN moral))))))
(ROOT (S (VP (VBG ) (NP (DT ) (NN )) (PP (IN ) (NP (DT ) (NN ))) (PP (IN ) (NP (DT ) (NN ))))))