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

Input: Consider Input: Sentence: 'a no parking sign next to a car riding down a street'. Replace the letter 'g' with 'l' in the sentence.

Output: a no parkinl siln next to a car ridinl down a street

Input: Consider Input: Sentence: 'a couple of horses with carriages at a building'. Replace the letter 'u' with 'm' in the sentence.

Output: a comple of horses with carriages at a bmilding

Input: Consider Input: Sentence: 'a living room with a person playing with a kid'. Replace the letter 'l' with 'p' in the sentence.
Output: a piving room with a person ppaying with a kid