while his characters are acting horribly 
(ROOT (SBAR (IN while) (S (NP (PRP$ his) (NNS characters)) (VP (VBP are) (VP (VBG acting) (ADVP (RB horribly)))))))
(ROOT (SBAR (IN ) (S (NP (PRP$ ) (NNS )) (VP (VBP ) (VP (VBG ) (ADVP (RB )))))))