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

Ex Input:
Sentence: 'an old photo of group of people nicely dressed around the end of a long table'. Replace the letter 'e' with 'i' in the sentence.

Ex Output:
an old photo of group of piopli nicily drissid around thi ind of a long tabli


Ex Input:
Sentence: 'a man is somewhat hard to be seen in the wave, on his board'. Replace the letter 's' with 'b' in the sentence.

Ex Output:
a man ib bomewhat hard to be been in the wave, on hib board


Ex Input:
Sentence: 'a computer desk in a corner with a desktop computer on it'. Replace the letter 'm' with 'n' in the sentence.

Ex Output:

a conputer desk in a corner with a desktop conputer on it