'm left slightly disappointed that it did n't 
(ROOT (S (VP (VBP 'm) (VP (VBN left) (S (ADJP (RB slightly) (JJ disappointed) (SBAR (IN that) (S (NP (PRP it)) (VP (VBD did) (RB n't))))))))))
(ROOT (S (VP (VBP ) (VP (VBN ) (S (ADJP (RB ) (JJ ) (SBAR (IN ) (S (NP (PRP )) (VP (VBD ) (RB ))))))))))