there 's plenty to impress about e.t. 
(ROOT (S (NP (EX there)) (VP (VBZ 's) (NP (NP (NN plenty)) (SBAR (S (VP (TO to) (VP (VB impress) (PP (IN about) (NP (NNP e.t))))))))) (. .)))
(ROOT (S (NP (EX )) (VP (VBZ ) (NP (NP (NN )) (SBAR (S (VP (TO ) (VP (VB ) (PP (IN ) (NP (NNP ))))))))) (. )))