I said to him, don't you know, Chepe, what it is?
( ( I ( said ( to him ) ) ) ( , ( ( ( ( do n't ) you ) ( ( ( ( know , ) Chepe ) , ) ( what ( it is ) ) ) ) ? ) ) )
(ROOT (SQ (S (NP (PRP I)) (VP (VBD said) (PP (TO to) (NP (PRP him))))) (, ,) (SQ (VBP do) (RB n't) (NP (PRP you)) (VP (VB know) (, ,) (VB Chepe) (, ,) (SBAR (WHNP (WP what)) (S (NP (PRP it)) (VP (VBZ is)))))) (. ?)))
Chepe didn't know. Chepe also didn't know why his name was Chepe, either.
( ( ( Chepe ( ( ( did n't ) know ) . ) ) ( Chepe ( also ( ( did n't ) ( know ( why ( ( his name ) ( ( ( was Chepe ) , ) either ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNP Chepe)) (VP (VBD did) (RB n't) (VP (VB know))) (. .)) (S (NP (NNP Chepe)) (ADVP (RB also)) (VP (VBD did) (RB n't) (VP (VB know) (SBAR (WHADVP (WRB why)) (S (NP (PRP$ his) (NN name)) (VP (VBD was) (NP (NNP Chepe)) (, ,) (ADVP (RB either)))))))) (. .)))