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

Example Input: Sentence: 'two police officers riding horses down the street'. Replace the letter 'o' with 'd' in the sentence.
Example Output: twd pdlice dfficers riding hdrses ddwn the street

Example Input: Sentence: 'a painting of scissors going to cut a chain with a lock'. Replace the letter 'g' with 'v' in the sentence.
Example Output: a paintinv of scissors voinv to cut a chain with a lock

Example Input: Sentence: 'a cat a dog and a person standing on a hardwood floor near a refridgerator'. Replace the letter 't' with 'j' in the sentence.
Example Output:
a caj a dog and a person sjanding on a hardwood floor near a refridgerajor