like a soft drink that 's been sitting open too long : it 's too much syrup and not enough fizz . 
(ROOT (S (PP (IN like) (NP (NP (DT a) (JJ soft) (NN drink)) (SBAR (WHNP (WDT that)) (S (VP (VBZ 's) (VP (VBN been) (VP (VBG sitting) (ADJP (JJ open)) (ADVP (RB too) (RB long))))))))) (: :) (S (NP (PRP it)) (VP (VBZ 's) (NP (NP (ADJP (RB too) (JJ much)) (NN syrup)) (CC and) (NP (ADJP (RB not) (JJ enough)) (NN fizz))))) (. .)))
(ROOT (S (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (SBAR (WHNP (WDT )) (S (VP (VBZ ) (VP (VBN ) (VP (VBG ) (ADJP (JJ )) (ADVP (RB ) (RB ))))))))) (: ) (S (NP (PRP )) (VP (VBZ ) (NP (NP (ADJP (RB ) (JJ )) (NN )) (CC ) (NP (ADJP (RB ) (JJ )) (NN ))))) (. )))