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

[EX Q]: Sentence: 'a laptop computer attached to a large monitor'. Replace the letter 'a' with 'r' in the sentence.
[EX A]: r lrptop computer rttrched to r lrrge monitor

[EX Q]: Sentence: 'some brown black and white horses clouds and rocks'. Replace the letter 'a' with 'n' in the sentence.
[EX A]: some brown blnck nnd white horses clouds nnd rocks

[EX Q]: Sentence: 'two men standing on street next to a tree and building'. Replace the letter 'u' with 'z' in the sentence.
[EX A]:
two men standing on street next to a tree and bzilding