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