an improvement on the feeble examples of big-screen poke-mania that have preceded it 
(ROOT (NP (NP (DT an) (NN improvement)) (PP (IN on) (NP (NP (NP (DT the) (JJ feeble) (NNS examples)) (PP (IN of) (NP (NML (JJ big) (HYPH -) (NN screen)) (NN poke) (HYPH -) (NN mania)))) (SBAR (WHNP (WDT that)) (S (VP (VBP have) (VP (VBN preceded) (NP (PRP it))))))))))
(ROOT (NP (NP (DT ) (NN )) (PP (IN ) (NP (NP (NP (DT ) (JJ ) (NNS )) (PP (IN ) (NP (NML (JJ ) (HYPH ) (NN )) (NN ) (HYPH ) (NN )))) (SBAR (WHNP (WDT )) (S (VP (VBP ) (VP (VBN ) (NP (PRP ))))))))))