the sentimental script has problems , but the actors pick up the slack . 
(ROOT (S (S (NP (DT the) (JJ sentimental) (NN script)) (VP (VBZ has) (NP (NNS problems)))) (, ,) (CC but) (S (NP (DT the) (NNS actors)) (VP (VBP pick) (PRT (RP up)) (NP (DT the) (NN slack)))) (. .)))
(ROOT (S (S (NP (DT ) (JJ ) (NN )) (VP (VBZ ) (NP (NNS )))) (, ) (CC ) (S (NP (DT ) (NNS )) (VP (VBP ) (PRT (RP )) (NP (DT ) (NN )))) (. )))