i 'm going to give it a marginal thumbs up . 
(ROOT (S (NP (PRP i)) (VP (VBP 'm) (VP (VBG going) (S (VP (TO to) (VP (VB give) (NP (PRP it)) (NP (DT a) (JJ marginal) (NN thumbs) (RP up))))))) (. .)))
(ROOT (S (NP (PRP )) (VP (VBP ) (VP (VBG ) (S (VP (TO ) (VP (VB ) (NP (PRP )) (NP (DT ) (JJ ) (NN ) (RP ))))))) (. )))