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

[Q]: Sentence: 'a refrigerator with both its doors open in a kitchen'. Replace the letter 'o' with 'x' in the sentence.
[A]: a refrigeratxr with bxth its dxxrs xpen in a kitchen

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

[Q]: Sentence: 'a black and brown dog walking across a sandy beach'. Replace the letter 'a' with 'i' in the sentence.
[A]:
i blick ind brown dog wilking icross i sindy beich