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

Example Input: Sentence: 'a toilet and a microwave sitting out for the trash'. Replace the letter 'i' with 's' in the sentence.
Example Output: a toslet and a mscrowave ssttsng out for the trash

Example Input: Sentence: 'an elephant in chains converses with a smaller elephant who is not wearing chains'. Replace the letter 'i' with 'm' in the sentence.
Example Output: an elephant mn chamns converses wmth a smaller elephant who ms not wearmng chamns

Example Input: Sentence: 'an electronic keyboard hooked up to two computers'. Replace the letter 'o' with 'q' in the sentence.
Example Output:
an electrqnic keybqard hqqked up tq twq cqmputers