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

Ex Input:
Sentence: 'giraffe standing on a pile of rocks reaching up to a branch with its mouth'. Replace the letter 'g' with 'n' in the sentence.

Ex Output:
niraffe standinn on a pile of rocks reachinn up to a branch with its mouth


Ex Input:
Sentence: 'a boy taking a nap with his dog on a bed'. Replace the letter 'o' with 'i' in the sentence.

Ex Output:
a biy taking a nap with his dig in a bed


Ex Input:
Sentence: 'a woman is standing in front of a stove in a kitchen'. Replace the letter 'w' with 'c' in the sentence.

Ex Output:

a coman is standing in front of a stove in a kitchen