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

Ex Input:
Sentence: 'a giraffe walking in its natural habitat on the savannah'. Replace the letter 't' with 'u' in the sentence.

Ex Output:
a giraffe walking in ius nauural habiuau on uhe savannah


Ex Input:
Sentence: 'a large elephant that has people all around it'. Replace the letter 'h' with 'm' in the sentence.

Ex Output:
a large elepmant tmat mas people all around it


Ex Input:
Sentence: 'a woman biting into a sandwich with a happy look on her face'. Replace the letter 'h' with 'o' in the sentence.

Ex Output:

a woman biting into a sandwico wito a oappy look on oer face