those so-so films that could have been much better 
(ROOT (NP (NP (DT those) (ADJP (RB so) (HYPH -) (RB so)) (NNS films)) (SBAR (WHNP (WDT that)) (S (VP (MD could) (VP (VB have) (VP (VBN been) (ADJP (RB much) (JJR better)))))))))
(ROOT (NP (NP (DT ) (ADJP (RB ) (HYPH ) (RB )) (NNS )) (SBAR (WHNP (WDT )) (S (VP (MD ) (VP (VB ) (VP (VBN ) (ADJP (RB ) (JJR )))))))))