the acting is just fine , but there 's not enough substance here to sustain interest for the full 90 minutes , especially with the weak payoff . 
(ROOT (S (S (NP (DT the) (NN acting)) (VP (VBZ is) (ADJP (RB just) (JJ fine)))) (, ,) (CC but) (S (NP (EX there)) (VP (VBZ 's) (RB not) (NP (JJ enough) (NN substance)) (ADVP (RB here)) (S (VP (TO to) (VP (VB sustain) (NP (NN interest)) (PP (IN for) (NP (DT the) (JJ full) (CD 90) (NNS minutes))) (, ,) (PP (ADVP (RB especially)) (IN with) (NP (DT the) (JJ weak) (NN payoff)))))))) (. .)))
(ROOT (S (S (NP (DT ) (NN )) (VP (VBZ ) (ADJP (RB ) (JJ )))) (, ) (CC ) (S (NP (EX )) (VP (VBZ ) (RB ) (NP (JJ ) (NN )) (ADVP (RB )) (S (VP (TO ) (VP (VB ) (NP (NN )) (PP (IN ) (NP (DT ) (JJ ) (CD ) (NNS ))) (, ) (PP (ADVP (RB )) (IN ) (NP (DT ) (JJ ) (NN )))))))) (. )))