YOU SAID:

The people who walked the walk could not talk the talk

INTO JAPANESE

散歩をした人は話ができなかった

BACK INTO ENGLISH

The person who took the walk could not speak

INTO JAPANESE

散歩した人は話せなかった

BACK INTO ENGLISH

The person who took a walk could not speak

INTO JAPANESE

散歩した人は話せなかった

BACK INTO ENGLISH

The person who took a walk could not speak