ambiguous enough to be engaging and 
(ROOT (UCP (ADJP (JJ ambiguous) (RB enough) (S (VP (TO to) (VP (VB be) (ADJP (VBG engaging)))))) (CC and)))
(ROOT (UCP (ADJP (JJ ) (RB ) (S (VP (TO ) (VP (VB ) (ADJP (VBG )))))) (CC )))