und drung , but explains its characters ' decisions only unsatisfactorily . 
(ROOT (S (ADVP (RB und)) (VP (JJ drung)) (, ,) (CC but) (VP (VBZ explains) (NP (NP (PRP$ its) (NNS characters) (POS ')) (NNS decisions)) (ADVP (RB only) (RB unsatisfactorily))) (. .)))
(ROOT (S (ADVP (RB )) (VP (JJ )) (, ) (CC ) (VP (VBZ ) (NP (NP (PRP$ ) (NNS ) (POS )) (NNS )) (ADVP (RB ) (RB ))) (. )))