instruction:
In this task, you need to replace a letter in the sentence with another given letter.
question:
Sentence: 'a baseball game is in progress at a baseball stadium'. Replace the letter 's' with 'r' in the sentence.
answer:
a bareball game ir in progrerr at a bareball rtadium


question:
Sentence: 'a city street at dusk time with traffic'. Replace the letter 'i' with 'm' in the sentence.
answer:
a cmty street at dusk tmme wmth traffmc


question:
Sentence: 'a lone zebra in a dry grass field'. Replace the letter 'd' with 'b' in the sentence.
answer:

a lone zebra in a bry grass fielb