saw how bad this movie was 
(ROOT (VP (VBD saw) (SBAR (WHADJP (WRB how) (JJ bad)) (S (NP (DT this) (NN movie)) (VP (VBD was))))))
(ROOT (VP (VBD ) (SBAR (WHADJP (WRB ) (JJ )) (S (NP (DT ) (NN )) (VP (VBD ))))))