here , alas , it collapses like an overcooked soufflé . 
(ROOT (S (ADVP (RB here)) (, ,) (INTJ (UH alas)) (, ,) (NP (PRP it)) (VP (VBZ collapses) (PP (IN like) (NP (DT an) (VBN overcooked) (NN soufflé)))) (. .)))
(ROOT (S (ADVP (RB )) (, ) (INTJ (UH )) (, ) (NP (PRP )) (VP (VBZ ) (PP (IN ) (NP (DT ) (VBN ) (NN )))) (. )))