this is n't a movie ; it 's a symptom 
(ROOT (S (S (NP (DT this)) (VP (VBZ is) (RB n't) (NP (DT a) (NN movie)))) (, ;) (S (NP (PRP it)) (VP (VBZ 's) (NP (DT a) (NN symptom))))))
(ROOT (S (S (NP (DT )) (VP (VBZ ) (RB ) (NP (DT ) (NN )))) (, ) (S (NP (PRP )) (VP (VBZ ) (NP (DT ) (NN ))))))