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

Ex Input:
Sentence: 'a man is posing in a desert, leaning on a sign with an image of a camel on it'. Replace the letter 'i' with 'r' in the sentence.

Ex Output:
a man rs posrng rn a desert, leanrng on a srgn wrth an rmage of a camel on rt


Ex Input:
Sentence: 'a cat is watching a computer with a video of a cat'. Replace the letter 't' with 'a' in the sentence.

Ex Output:
a caa is waaching a compuaer wiah a video of a caa


Ex Input:
Sentence: 'large sized cow getting an injection from a woman in camo'. Replace the letter 'a' with 'u' in the sentence.

Ex Output:

lurge sized cow getting un injection from u womun in cumo