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

Ex Input:
Sentence: 'a plate topped with waffles, bacon and banana slices'. Replace the letter 'a' with 'k' in the sentence.

Ex Output:
k plkte topped with wkffles, bkcon knd bknknk slices

Ex Input:
Sentence: 'a man in a baseball cap watching something in the air'. Replace the letter 'g' with 'o' in the sentence.

Ex Output:
a man in a baseball cap watchino somethino in the air

Ex Input:
Sentence: 'a man racing down a mountain on a pair of skis'. Replace the letter 'o' with 'm' in the sentence.

Ex Output:
a man racing dmwn a mmuntain mn a pair mf skis