is completely serviceable and quickly forgettable 
(ROOT (VP (VBZ is) (ADJP (ADJP (RB completely) (JJ serviceable)) (CC and) (ADJP (RB quickly) (JJ forgettable)))))
(ROOT (VP (VBZ ) (ADJP (ADJP (RB ) (JJ )) (CC ) (ADJP (RB ) (JJ )))))