I feel that you probably underestimate the danger, and therefore warn you again that I can promise you no protection.
( I ( ( feel ( that ( you ( probably ( ( ( ( underestimate ( the danger ) ) , ) and ) ( therefore ( ( ( warn you ) again ) ( that ( I ( can ( ( promise you ) ( no protection ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP feel) (SBAR (IN that) (S (NP (PRP you)) (ADVP (RB probably)) (VP (VP (VB underestimate) (NP (DT the) (NN danger))) (, ,) (CC and) (VP (ADVP (RB therefore)) (VB warn) (NP (PRP you)) (ADVP (RB again)) (SBAR (IN that) (S (NP (PRP I)) (VP (MD can) (VP (VB promise) (NP (PRP you)) (NP (DT no) (NN protection))))))))))) (. .)))
I feel that you do not underestimate the danger, and therefore I do not need to warn you.
( ( ( ( ( I ( feel ( that ( you ( ( do not ) ( underestimate ( the danger ) ) ) ) ) ) ) , ) and ) ( therefore ( I ( ( do not ) ( need ( to ( warn you ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (PRP I)) (VP (VBP feel) (SBAR (IN that) (S (NP (PRP you)) (VP (VBP do) (RB not) (VP (VB underestimate) (NP (DT the) (NN danger)))))))) (, ,) (CC and) (S (ADVP (RB therefore)) (NP (PRP I)) (VP (VBP do) (RB not) (VP (VB need) (S (VP (TO to) (VP (VB warn) (NP (PRP you)))))))) (. .)))