to have been picked not for their acting chops , but for their looks and appeal to the pre-teen crowd 
(ROOT (S (VP (TO to) (VP (VB have) (VP (VBN been) (VP (VBN picked) (PP (RB not) (PP (IN for) (NP (PRP$ their) (NN acting) (NNS chops))) (, ,) (CC but) (PP (IN for) (NP (NP (PRP$ their) (NNS looks) (CC and) (VB appeal)) (PP (IN to) (NP (DT the) (JJ pre-teen) (NN crowd))))))))))))
(ROOT (S (VP (TO ) (VP (VB ) (VP (VBN ) (VP (VBN ) (PP (RB ) (PP (IN ) (NP (PRP$ ) (NN ) (NNS ))) (, ) (CC ) (PP (IN ) (NP (NP (PRP$ ) (NNS ) (CC ) (VB )) (PP (IN ) (NP (DT ) (JJ ) (NN ))))))))))))