This is not newsletter.
( This ( ( ( is not ) newsletter ) . ) )
(ROOT (S (NP (DT This)) (VP (VBZ is) (RB not) (NP (NN newsletter))) (. .)))
A newsletter may be introduced next year.
( ( A newsletter ) ( ( may ( be ( introduced ( next year ) ) ) ) . ) )
(ROOT (S (NP (DT A) (NN newsletter)) (VP (MD may) (VP (VB be) (VP (VBN introduced) (NP (JJ next) (NN year))))) (. .)))