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

[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 couple of brown bears walking across a lush green field'. Replace the letter 'w' with 'o' in the sentence.
[EX A]: a couple of broon bears oalking across a lush green field

[EX Q]: Sentence: 'a red and purple bench with shoes underneath it, on a brick sidewalk'. Replace the letter 'u' with 't' in the sentence.
[EX A]:
a red and ptrple bench with shoes tnderneath it, on a brick sidewalk