's so downbeat and nearly humorless 
(ROOT (VP (VBZ 's) (ADJP (ADJP (RB so) (JJ downbeat)) (CC and) (ADJP (RB nearly) (JJ humorless)))))
(ROOT (VP (VBZ ) (ADJP (ADJP (RB ) (JJ )) (CC ) (ADJP (RB ) (JJ )))))