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

Ex Input:
Sentence: 'a buddha statue sitting under a cat umbrella'. Replace the letter 'c' with 'h' in the sentence.

Ex Output:
a buddha statue sitting under a hat umbrella


Ex Input:
Sentence: 'this refrigerator is covered in stickers on it'. Replace the letter 't' with 'h' in the sentence.

Ex Output:
hhis refrigerahor is covered in shickers on ih


Ex Input:
Sentence: 'a little girl is sitting in a suitcase in a library'. Replace the letter 't' with 'l' in the sentence.

Ex Output:

a lillle girl is silling in a suilcase in a library