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 red train moves over snowy rail road tracks'. Replace the letter 'v' with 'w' in the sentence.
answer:
a red train mowes ower snowy rail road tracks


question:
Sentence: 'people are playing frisbee in a field near portable bathrooms'. Replace the letter 'i' with 'a' in the sentence.
answer:

people are playang frasbee an a faeld near portable bathrooms