perfectly acceptable , occasionally very enjoyable children 's entertainment 
(ROOT (NP (ADJP (RB perfectly) (JJ acceptable)) (, ,) (ADJP (RB occasionally) (RB very) (JJ enjoyable)) (NP (NNS children) (POS 's)) (NN entertainment)))
(ROOT (NP (ADJP (RB ) (JJ )) (, ) (ADJP (RB ) (RB ) (JJ )) (NP (NNS ) (POS )) (NN )))