'll only put you to sleep . 
(ROOT (S (VP (MD 'll) (ADVP (RB only)) (VP (VB put) (NP (PRP you)) (PP (IN to) (VP (VB sleep))))) (. .)))
(ROOT (S (VP (MD ) (ADVP (RB )) (VP (VB ) (NP (PRP )) (PP (IN ) (VP (VB ))))) (. )))