i have n't laughed that hard in years ! 
(ROOT (S (NP (PRP i)) (VP (VBP have) (RB n't) (VP (VBN laughed) (ADVP (RB that) (RB hard)) (PP (IN in) (NP (NNS years))))) (. !)))
(ROOT (S (NP (PRP )) (VP (VBP ) (RB ) (VP (VBN ) (ADVP (RB ) (RB )) (PP (IN ) (NP (NNS ))))) (. )))