this is the most visually unappealing . 
(ROOT (S (NP (DT this)) (VP (VBZ is) (NP (DT the) (ADJP (RBS most) (RB visually) (JJ unappealing)))) (. .)))
(ROOT (S (NP (DT )) (VP (VBZ ) (NP (DT ) (ADJP (RBS ) (RB ) (JJ )))) (. )))