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

Ex Input:
Sentence: 'a house cat sits on an oven door, sniffing the oven racks inside'. Replace the letter 'i' with 'y' in the sentence.

Ex Output:
a house cat syts on an oven door, snyffyng the oven racks ynsyde

Ex Input:
Sentence: 'there are people camping and flying kites in a field'. Replace the letter 't' with 'j' in the sentence.

Ex Output:
jhere are people camping and flying kijes in a field

Ex Input:
Sentence: 'a woman standing in the snow on a pair of skis'. Replace the letter 'o' with 'c' in the sentence.

Ex Output:
a wcman standing in the sncw cn a pair cf skis