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

Input: Consider Input: Sentence: 'a brown door  that says gentlemen and a toilet'. Replace the letter 'o' with 'f' in the sentence.

Output: a brfwn dffr  that says gentlemen and a tfilet


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: 'two people with surfboards walking on the beach'. Replace the letter 'a' with 'c' in the sentence.


Output: two people with surfbocrds wclking on the becch