the saddest action hero performances ever witnessed 
(ROOT (NP (NP (DT the) (JJS saddest) (NML (NN action) (NN hero)) (NNS performances)) (VP (ADVP (RB ever)) (VBD witnessed))))
(ROOT (NP (NP (DT ) (JJS ) (NML (NN ) (NN )) (NNS )) (VP (ADVP (RB )) (VBD ))))