Definition: In this task, you need to replace a letter in the sentence with another given letter.
Input: Sentence: 'three yellow plates with birds painted on'. Replace the letter 'e' with 'b' in the sentence.
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
thrbb ybllow platbs with birds paintbd on