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