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

Example Input: Sentence: 'a white plate topped with a cut in half sandwich'. Replace the letter 'o' with 'x' in the sentence.
Example Output: a white plate txpped with a cut in half sandwich

Example Input: Sentence: 'a no parking sign next to a car riding down a street'. Replace the letter 'g' with 'l' in the sentence.
Example Output: a no parkinl siln next to a car ridinl down a street

Example Input: Sentence: 'bulldog wearing a life vest riding on a surfboard in the ocean'. Replace the letter 'e' with 'j' in the sentence.
Example Output:
bulldog wjaring a lifj vjst riding on a surfboard in thj ocjan