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

Ex Input:
Sentence: 'a broken suitcase on a small tile floor with the contents exposed'. Replace the letter 'u' with 'z' in the sentence.

Ex Output:
a broken szitcase on a small tile floor with the contents exposed


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: 'the mountains past the fence are covered in snow'. Replace the letter 'c' with 'e' in the sentence.

Ex Output:

the mountains past the fenee are eovered in snow