have been picked not for their acting chops , but for their looks 
(ROOT (S (VP (VBP 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 (PRP$ their) (NNS looks)))))))))
(ROOT (S (VP (VBP ) (VP (VBN ) (VP (VBN ) (PP (RB ) (PP (IN ) (NP (PRP$ ) (NN ) (NNS ))) (, ) (CC ) (PP (IN ) (NP (PRP$ ) (NNS )))))))))