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

Input: Consider Input: Sentence: 'a person and a dog are on a bench'. Replace the letter 'e' with 'r' in the sentence.

Output: a prrson and a dog arr on a brnch


Input: Consider Input: Sentence: 'giraffes behind a fence in the trees'. Replace the letter 'h' with 'l' in the sentence.

Output: giraffes belind a fence in tle trees


Input: Consider Input: Sentence: 'the boy is blowing a bubble for the nurse'. Replace the letter 'y' with 'k' in the sentence.


Output: the bok is blowing a bubble for the nurse