much of the action takes place 
(ROOT (S (NP (NP (JJ much)) (PP (IN of) (NP (DT the) (NN action)))) (VP (VBZ takes) (NP (NN place)))))
(ROOT (S (NP (NP (JJ )) (PP (IN ) (NP (DT ) (NN )))) (VP (VBZ ) (NP (NN )))))