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

Ex Input:
Sentence: 'a man is on a bed with a cat and laptop computer'. Replace the letter 'e' with 'n' in the sentence.

Ex Output:
a man is on a bnd with a cat and laptop computnr


Ex Input:
Sentence: 'wooden park bench sitting between two trees with grassy background'. Replace the letter 'i' with 'q' in the sentence.

Ex Output:
wooden park bench sqttqng between two trees wqth grassy background


Ex Input:
Sentence: 'a piece of red velvet cake and coffee on a table'. Replace the letter 'e' with 'b' in the sentence.

Ex Output:

a pibcb of rbd vblvbt cakb and coffbb on a tablb