it 's a hellish , numbing experience to watch 
(ROOT (S (NP (PRP it)) (VP (VBZ 's) (NP (NP (DT a) (JJ hellish) (, ,) (JJ numbing) (NN experience)) (SBAR (S (VP (TO to) (VP (VB watch)))))))))
(ROOT (S (NP (PRP )) (VP (VBZ ) (NP (NP (DT ) (JJ ) (, ) (JJ ) (NN )) (SBAR (S (VP (TO ) (VP (VB )))))))))