should never have been brought out of hibernation 
(ROOT (VP (MD should) (ADVP (RB never)) (VP (VB have) (VP (VBN been) (VP (VBN brought) (PP (IN out) (PP (IN of) (NP (NN hibernation)))))))))
(ROOT (VP (MD ) (ADVP (RB )) (VP (VB ) (VP (VBN ) (VP (VBN ) (PP (IN ) (PP (IN ) (NP (NN )))))))))