essentially ruined -- or , rather , 
(ROOT (S (ADVP (RB essentially)) (VP (VP (VBN ruined)) (, --) (CC or) (, ,) (ADVP (RB rather)) (, ,))))
(ROOT (S (ADVP (RB )) (VP (VP (VBN )) (, ) (CC ) (, ) (ADVP (RB )) (, ))))