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