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

Ex Input:
Sentence: 'a woman sitting in front of a laptop computer'. Replace the letter 'u' with 'o' in the sentence.

Ex Output:
a woman sitting in front of a laptop compoter


Ex Input:
Sentence: 'a little kid that is eating an apple'. Replace the letter 'p' with 'j' in the sentence.

Ex Output:
a little kid that is eating an ajjle


Ex Input:
Sentence: 'woman riding on the back of a grey and black horse'. Replace the letter 'a' with 'x' in the sentence.

Ex Output:

womxn riding on the bxck of x grey xnd blxck horse