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

Example Input: Sentence: 'a no parking sign next to a car riding down a street'. Replace the letter 'g' with 'l' in the sentence.
Example Output: a no parkinl siln next to a car ridinl down a street

Example Input: Sentence: 'a red park ride bus at a curb with a green/white bus behind'. Replace the letter 'h' with 'x' in the sentence.
Example Output: a red park ride bus at a curb witx a green/wxite bus bexind

Example Input: Sentence: 'a toilet that is being worked on with its  seat removed'. Replace the letter 't' with 'p' in the sentence.
Example Output:
a poilep phap is being worked on wiph ips  seap removed