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

Example Input: Sentence: 'a boy on the beach playing with a frisbee'. Replace the letter 'h' with 'e' in the sentence.
Example Output: a boy on tee beace playing wite a frisbee

Example Input: Sentence: 'a man eats food that is inside a banana peel'. Replace the letter 'n' with 'k' in the sentence.
Example Output: a mak eats food that is ikside a bakaka peel

Example Input: Sentence: 'many brightly colored umbrellas hanging downward from a domed ceiling'. Replace the letter 'm' with 'h' in the sentence.
Example Output:
hany brightly colored uhbrellas hanging downward froh a dohed ceiling