is never especially clever and often 
(ROOT (S (VP (VBZ is) (ADVP (RB never)) (ADJP (RB especially) (JJ clever))) (CC and) (ADVP (RB often))))
(ROOT (S (VP (VBZ ) (ADVP (RB )) (ADJP (RB ) (JJ ))) (CC ) (ADVP (RB ))))