hopefully , sets the tone for a summer of good stuff 
(ROOT (S (ADVP (RB hopefully)) (, ,) (VP (VBZ sets) (NP (NP (DT the) (NN tone)) (PP (IN for) (NP (NP (DT a) (NN summer)) (PP (IN of) (NP (JJ good) (NN stuff)))))))))
(ROOT (S (ADVP (RB )) (, ) (VP (VBZ ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (JJ ) (NN )))))))))