what great cinema can really do 
(ROOT (SBAR (WHNP (WDT what)) (S (NP (JJ great) (NN cinema)) (VP (MD can) (ADVP (RB really)) (VP (VB do))))))
(ROOT (SBAR (WHNP (WDT )) (S (NP (JJ ) (NN )) (VP (MD ) (ADVP (RB )) (VP (VB ))))))