directors dean deblois and chris sanders valiantly keep punching up the mix . 
(ROOT (S (NP (NP (NNS directors) (NN dean) (NN deblois)) (CC and) (NP (NNP chris) (NNS sanders))) (ADVP (RB valiantly)) (VP (VBP keep) (S (VP (VBG punching) (PRT (RP up)) (NP (DT the) (NN mix))))) (. .)))
(ROOT (S (NP (NP (NNS ) (NN ) (NN )) (CC ) (NP (NNP ) (NNS ))) (ADVP (RB )) (VP (VBP ) (S (VP (VBG ) (PRT (RP )) (NP (DT ) (NN ))))) (. )))