i have returned from the beyond to warn you : 
(ROOT (S (NP (PRP i)) (VP (VBP have) (VP (VBN returned) (PP (IN from) (NP (DT the) (RB beyond))) (S (VP (TO to) (VP (VB warn) (NP (PRP you))))))) (: :)))
(ROOT (S (NP (PRP )) (VP (VBP ) (VP (VBN ) (PP (IN ) (NP (DT ) (RB ))) (S (VP (TO ) (VP (VB ) (NP (PRP ))))))) (: )))