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

Ex Input:
Sentence: 'a plate with some mean and vegetables on it'. Replace the letter 'a' with 'f' in the sentence.

Ex Output:
f plfte with some mefn fnd vegetfbles on it


Ex Input:
Sentence: 'a man sitting in a chair with a laptop in his lap'. Replace the letter 'p' with 'v' in the sentence.

Ex Output:
a man sitting in a chair with a lavtov in his lav


Ex Input:
Sentence: 'a man in a white shirt leaning on a tennis net'. Replace the letter 'i' with 'g' in the sentence.

Ex Output:

a man gn a whgte shgrt leangng on a tenngs net