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

[Q]: Sentence: 'a man sitting on a luggage cart inside of an airport'. Replace the letter 't' with 'a' in the sentence.
[A]: a man siaaing on a luggage cara inside of an airpora


[Q]: Sentence: 'a man is standing on a snowboard, atop a mountain'. Replace the letter 'd' with 'u' in the sentence.
[A]: a man is stanuing on a snowboaru, atop a mountain


[Q]: Sentence: 'birds are on the shore of the ocean and under a bench'. Replace the letter 'r' with 'a' in the sentence.
[A]:
biads aae on the shoae of the ocean and undea a bench