contains no wit , only labored gags 
(ROOT (S (VP (VBZ contains) (NP (NP (DT no) (NN wit)) (, ,) (NP (RB only) (VBN labored) (NNS gags))))))
(ROOT (S (VP (VBZ ) (NP (NP (DT ) (NN )) (, ) (NP (RB ) (VBN ) (NNS ))))))