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