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

Ex Input:
Sentence: 'a man with scruffy hair wearing a tie and glasses'. Replace the letter 'r' with 'f' in the sentence.

Ex Output:
a man with scfuffy haif weafing a tie and glasses


Ex Input:
Sentence: 'a police officer on a horse is riding down the street'. Replace the letter 'h' with 'a' in the sentence.

Ex Output:
a police officer on a aorse is riding down tae street


Ex Input:
Sentence: 'the dog is have a ball in his mouth'. Replace the letter 'e' with 'm' in the sentence.

Ex Output:

thm dog is havm a ball in his mouth