to engross even the most antsy youngsters 
(ROOT (S (VP (TO to) (VP (VB engross) (NP (RB even) (DT the) (ADJP (RBS most) (JJ antsy)) (NNS youngsters))))))
(ROOT (S (VP (TO ) (VP (VB ) (NP (RB ) (DT ) (ADJP (RBS ) (JJ )) (NNS ))))))