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 woman is on skis riding down the snow covered sloped'. Replace the letter 'd' with 'q' in the sentence.

Output: a woman is on skis riqing qown the snow covereq slopeq


Input: Consider Input: Sentence: 'some people who are sitting on some chairs'. Replace the letter 'i' with 'd' in the sentence.


Output: some people who are sdttdng on some chadrs