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

Ex Input:
Sentence: 'a man swinging at a tennis with a racquet on a court'. Replace the letter 't' with 'c' in the sentence.

Ex Output:
a man swinging ac a cennis wich a racquec on a courc


Ex Input:
Sentence: 'a girl riding a horse is jumping the log'. Replace the letter 'a' with 't' in the sentence.

Ex Output:
t girl riding t horse is jumping the log


Ex Input:
Sentence: 'a road traveling under a freeway over pass'. Replace the letter 'a' with 'r' in the sentence.

Ex Output:

r rord trrveling under r freewry over prss