( ( taste ( not bitter ) ) ... )
(ROOT (S (VP (VB taste) (ADJP (RB not) (JJ bitter))) (: ...)))
taste not bitter ......
(ROOT (S (NP (NNS Bases)) (ADVP (RB normally)) (VP (VBP have) (NP (DT a) (JJ bitter) (NN taste))) (. .)))