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

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

[EX Q]: Sentence: 'there is a piece of a cake on the plate and a cup of drink'. Replace the letter 'r' with 'u' in the sentence.
[EX A]: theue is a piece of a cake on the plate and a cup of duink

[EX Q]: Sentence: 'a colorful vase containing a palm plant sits in the sun'. Replace the letter 'u' with 'z' in the sentence.
[EX A]:
a colorfzl vase containing a palm plant sits in the szn