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

Example Input: Sentence: 'a large elephant standing outside beside a tree'. Replace the letter 'e' with 'y' in the sentence.
Example Output: a largy ylyphant standing outsidy bysidy a tryy

Example Input: Sentence: 'broccoli and cooked meat arranged on a plate'. Replace the letter 'c' with 'l' in the sentence.
Example Output: brolloli and looked meat arranged on a plate

Example Input: Sentence: 'a person who was snowboarding wiped out in the snow'. Replace the letter 'h' with 'v' in the sentence.
Example Output:
a person wvo was snowboarding wiped out in tve snow