sit through , enjoy on a certain level 
(ROOT (S (VP (VP (VB sit) (ADVP (RP through))) (, ,) (VP (VB enjoy) (PP (IN on) (NP (DT a) (JJ certain) (NN level)))))))
(ROOT (S (VP (VP (VB ) (ADVP (RP ))) (, ) (VP (VB ) (PP (IN ) (NP (DT ) (JJ ) (NN )))))))