the only thing i laughed at 
(ROOT (NP (NP (DT the) (JJ only) (NN thing)) (SBAR (S (NP (PRP i)) (VP (VBD laughed) (PP (IN at)))))))
(ROOT (NP (NP (DT ) (JJ ) (NN )) (SBAR (S (NP (PRP )) (VP (VBD ) (PP (IN )))))))