i don't know no i don't
( i ( ( do n't ) ( know ( ( no i ) ( do n't ) ) ) ) )
(ROOT (S (NP (FW i)) (VP (VBP do) (RB n't) (VP (VB know) (SBAR (S (NP (DT no) (FW i)) (VP (VBP do) (RB n't))))))))
I have no knowledge of that.
( I ( ( have ( ( no knowledge ) ( of that ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBP have) (NP (NP (DT no) (NN knowledge)) (PP (IN of) (NP (DT that))))) (. .)))