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

Ex Input:
Sentence: 'a number of people sitting on chairs near each other'. Replace the letter 'c' with 'm' in the sentence.

Ex Output:
a number of people sitting on mhairs near eamh other


Ex Input:
Sentence: 'a photo of a woman milking a brown cow'. Replace the letter 'k' with 'q' in the sentence.

Ex Output:
a photo of a woman milqing a brown cow


Ex Input:
Sentence: 'a young man with a tennis racquet sitting next to a young woman'. Replace the letter 's' with 'x' in the sentence.

Ex Output:

a young man with a tennix racquet xitting next to a young woman