what makes this film special 
(ROOT (SBAR (WHNP (WP what)) (S (VP (VBZ makes) (S (NP (DT this) (NN film)) (ADJP (JJ special)))))))
(ROOT (SBAR (WHNP (WP )) (S (VP (VBZ ) (S (NP (DT ) (NN )) (ADJP (JJ )))))))