ruined by amateurish writing and acting , 
(ROOT (S (VP (VBN ruined) (PP (IN by) (NP (JJ amateurish) (NN writing) (CC and) (NN acting)))) (, ,)))
(ROOT (S (VP (VBN ) (PP (IN ) (NP (JJ ) (NN ) (CC ) (NN )))) (, )))