it is definitely worth seeing . 
(ROOT (S (NP (PRP it)) (VP (VBZ is) (ADVP (RB definitely)) (ADJP (JJ worth) (S (VP (VBG seeing))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBZ ) (ADVP (RB )) (ADJP (JJ ) (S (VP (VBG ))))) (. )))