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

Ex Input:
Sentence: 'an overhead view of a city cross walk on a rainy day features an array of colorful umbrellas'. Replace the letter 's' with 'd' in the sentence.

Ex Output:
an overhead view of a city crodd walk on a rainy day featured an array of colorful umbrellad


Ex Input:
Sentence: 'a man is standing at the base ball triangle with bat in tow'. Replace the letter 'n' with 'c' in the sentence.

Ex Output:
a mac is stacdicg at the base ball triacgle with bat ic tow


Ex Input:
Sentence: 'a couple of yellow buses driving down a city street'. Replace the letter 'o' with 'w' in the sentence.

Ex Output:

a cwuple wf yellww buses driving dwwn a city street