of all the halloween 's , this is the most visually unappealing . 
(ROOT (S (PP (IN of) (NP (PDT all) (DT the) (NN halloween) (POS 's))) (, ,) (NP (DT this)) (VP (VBZ is) (NP (DT the) (ADJP (RBS most) (RB visually) (JJ unappealing)))) (. .)))
(ROOT (S (PP (IN ) (NP (PDT ) (DT ) (NN ) (POS ))) (, ) (NP (DT )) (VP (VBZ ) (NP (DT ) (ADJP (RBS ) (RB ) (JJ )))) (. )))