No, indeed, said Cynthia. 
( No ( , ( indeed ( , ( ( said Cynthia ) . ) ) ) ) )
(ROOT (S (INTJ (UH No)) (, ,) (ADVP (RB indeed)) (, ,) (VP (VBD said) (NP (NNP Cynthia))) (. .)))
Certainly not, said Cynthia.
( Certainly ( not ( , ( ( said Cynthia ) . ) ) ) )
(ROOT (S (ADVP (RB Certainly)) (ADVP (RB not)) (, ,) (VP (VBD said) (NP (NNP Cynthia))) (. .)))