( a ) crushing disappointment . 
(ROOT (FRAG (FRAG (-LRB- -LRB-) (LS a) (-RRB- -RRB-)) (NP (VBG crushing) (NN disappointment)) (. .)))
(ROOT (FRAG (FRAG (-LRB- ) (LS ) (-RRB- )) (NP (VBG ) (NN )) (. )))