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: 'two girls holding blue umbrellas wearing shirts and plastic'. Replace the letter 'd' with 'y' in the sentence.

Ex Output:
two girls holying blue umbrellas wearing shirts any plastic


Ex Input:
Sentence: 'a man rides his skateboard near a wall of colorful graffiti'. Replace the letter 's' with 'y' in the sentence.

Ex Output:

a man ridey hiy ykateboard near a wall of colorful graffiti