are n't likely to leave a lasting impression . 
(ROOT (S (VP (VBP are) (RB n't) (ADJP (JJ likely) (S (VP (TO to) (VP (VB leave) (NP (DT a) (JJ lasting) (NN impression))))))) (. .)))
(ROOT (S (VP (VBP ) (RB ) (ADJP (JJ ) (S (VP (TO ) (VP (VB ) (NP (DT ) (JJ ) (NN ))))))) (. )))