i could n't help but feel the wasted potential of this slapstick comedy . 
(ROOT (S (NP (PRP i)) (VP (MD could) (RB n't) (VP (VB help) (CC but) (VP (VB feel) (NP (NP (DT the) (VBN wasted) (NN potential)) (PP (IN of) (NP (DT this) (JJ slapstick) (NN comedy))))))) (. .)))
(ROOT (S (NP (PRP )) (VP (MD ) (RB ) (VP (VB ) (CC ) (VP (VB ) (NP (NP (DT ) (VBN ) (NN )) (PP (IN ) (NP (DT ) (JJ ) (NN ))))))) (. )))