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

Example Input: Sentence: 'a metal tray holding various vegetables that include potatoes and onions'. Replace the letter 'h' with 'e' in the sentence.
Example Output: a metal tray eolding various vegetables teat include potatoes and onions

Example Input: Sentence: 'a man sitting on a luggage cart inside of an airport'. Replace the letter 't' with 'a' in the sentence.
Example Output: a man siaaing on a luggage cara inside of an airpora

Example Input: Sentence: 'there is broccoli down in the leaves of this plant'. Replace the letter 'v' with 'd' in the sentence.
Example Output:
there is broccoli down in the leades of this plant