more likely to induce sleep than fright 
(ROOT (ADJP (ADJP (RBR more) (JJ likely) (S (VP (TO to) (VP (VB induce) (NP (NN sleep)))))) (PP (IN than) (NP (NN fright)))))
(ROOT (ADJP (ADJP (RBR ) (JJ ) (S (VP (TO ) (VP (VB ) (NP (NN )))))) (PP (IN ) (NP (NN )))))