duvall is strong as always . 
(ROOT (S (NP (NNP duvall)) (VP (VBZ is) (ADJP (JJ strong)) (PP (IN as) (ADVP (RB always)))) (. .)))
(ROOT (S (NP (NNP )) (VP (VBZ ) (ADJP (JJ )) (PP (IN ) (ADVP (RB )))) (. )))