that makes as much of a mess as this one 
(ROOT (SBAR (WHNP (DT that)) (S (VP (VBZ makes) (NP (NP (ADJP (RB as) (JJ much))) (PP (IN of) (NP (DT a) (NN mess))) (PP (IN as) (NP (DT this) (NN one))))))))
(ROOT (SBAR (WHNP (DT )) (S (VP (VBZ ) (NP (NP (ADJP (RB ) (JJ ))) (PP (IN ) (NP (DT ) (NN ))) (PP (IN ) (NP (DT ) (NN ))))))))