threw medical equipment at a window ; not because it was particularly funny 
(ROOT (S (S (VP (VBD threw) (NP (JJ medical) (NN equipment)) (PP (IN at) (NP (DT a) (NN window))))) (, ;) (RB not) (SBAR (IN because) (S (NP (PRP it)) (VP (VBD was) (ADJP (RB particularly) (JJ funny)))))))
(ROOT (S (S (VP (VBD ) (NP (JJ ) (NN )) (PP (IN ) (NP (DT ) (NN ))))) (, ) (RB ) (SBAR (IN ) (S (NP (PRP )) (VP (VBD ) (ADJP (RB ) (JJ )))))))