who are capable of anteing up some movie star charisma when they need it to sell us on this twisted love story , but who can also negotiate the movie 's darker turns 
(ROOT (SBAR (WHNP (WP who)) (S (VP (VBP are) (ADJP (JJ capable) (PP (IN of) (S (VP (VBG anteing) (PRT (RP up)) (NP (DT some) (NML (NN movie) (NN star)) (NN charisma)) (SBAR (SBAR (WHADVP (WRB when)) (S (NP (PRP they)) (VP (VBP need) (NP (PRP it)) (S (VP (TO to) (VP (VB sell) (NP (PRP us)) (PP (IN on) (NP (DT this) (VBN twisted) (NN love) (NN story))))))))) (, ,) (CC but) (SBAR (WHNP (WP who)) (S (VP (MD can) (ADVP (RB also)) (VP (VB negotiate) (NP (NP (DT the) (NN movie) (POS 's)) (JJR darker) (NNS turns)))))))))))))))
(ROOT (SBAR (WHNP (WP )) (S (VP (VBP ) (ADJP (JJ ) (PP (IN ) (S (VP (VBG ) (PRT (RP )) (NP (DT ) (NML (NN ) (NN )) (NN )) (SBAR (SBAR (WHADVP (WRB )) (S (NP (PRP )) (VP (VBP ) (NP (PRP )) (S (VP (TO ) (VP (VB ) (NP (PRP )) (PP (IN ) (NP (DT ) (VBN ) (NN ) (NN ))))))))) (, ) (CC ) (SBAR (WHNP (WP )) (S (VP (MD ) (ADVP (RB )) (VP (VB ) (NP (NP (DT ) (NN ) (POS )) (JJR ) (NNS )))))))))))))))