In this task, you need to replace a letter in the sentence with another given letter.

Sentence: 'a baseball game is in progress at a baseball stadium'. Replace the letter 's' with 'r' in the sentence.
a bareball game ir in progrerr at a bareball rtadium

Sentence: 'a dirt bike rider that is riding in the mud'. Replace the letter 'a' with 'o' in the sentence.
o dirt bike rider thot is riding in the mud

Sentence: 'there is a train coming up the tracks next to a street'. Replace the letter 'r' with 'd' in the sentence.

thede is a tdain coming up the tdacks next to a stdeet