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

Ex Input:
Sentence: 'a few zebras that are next to each other'. Replace the letter 'o' with 'u' in the sentence.

Ex Output:
a few zebras that are next tu each uther


Ex Input:
Sentence: 'four people are playing an interesting game in the park'. Replace the letter 'e' with 'x' in the sentence.

Ex Output:
four pxoplx arx playing an intxrxsting gamx in thx park


Ex Input:
Sentence: 'a car is covered with snow in a parking lot as a person in black stands near holding up ski poles'. Replace the letter 'p' with 'o' in the sentence.

Ex Output:

a car is covered with snow in a oarking lot as a oerson in black stands near holding uo ski ooles