is stiff or just plain bad . 
(ROOT (S (VP (VBZ is) (ADJP (ADJP (JJ stiff)) (CC or) (ADJP (RB just) (JJ plain) (JJ bad)))) (. .)))
(ROOT (S (VP (VBZ ) (ADJP (ADJP (JJ )) (CC ) (ADJP (RB ) (JJ ) (JJ )))) (. )))