Yes, he said.
( Yes ( , ( he ( said . ) ) ) )
(ROOT (S (INTJ (UH Yes)) (, ,) (NP (PRP he)) (VP (VBD said)) (. .)))
He didn't say a word.
( He ( ( ( did n't ) ( say ( a word ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBD did) (RB n't) (VP (VB say) (NP (DT a) (NN word)))) (. .)))