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

[EX Q]: Sentence: 'a man walking a horse on a dirt track'. Replace the letter 't' with 's' in the sentence.
[EX A]: a man walking a horse on a dirs srack

[EX Q]: Sentence: 'a photo of a river with a train bridge across it'. Replace the letter 'r' with 'f' in the sentence.
[EX A]: a photo of a fivef with a tfain bfidge acfoss it

[EX Q]: Sentence: 'various animals and birds in a wildlife park'. Replace the letter 'r' with 'd' in the sentence.
[EX A]:
vadious animals and bidds in a wildlife padk