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

Example Input: Sentence: 'a sign sitting on the side of a snow covered slope'. Replace the letter 'e' with 'g' in the sentence.
Example Output: a sign sitting on thg sidg of a snow covgrgd slopg

Example Input: Sentence: 'two men running for a soccer ball on a field'. Replace the letter 'd' with 'a' in the sentence.
Example Output: two men running for a soccer ball on a fiela

Example Input: Sentence: 'showing two bathroom stalls, one squat and one sit'. Replace the letter 'e' with 'b' in the sentence.
Example Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
showing two bathroom stalls, onb squat and onb sit

