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

Input: Consider Input: Sentence: 'a couple giraffes walking through a fielded area'. Replace the letter 'e' with 'c' in the sentence.

Output: a couplc giraffcs walking through a ficldcd arca


Input: Consider Input: Sentence: 'nine geese flying south for the winter months'. Replace the letter 't' with 'f' in the sentence.

Output: nine geese flying soufh for fhe winfer monfhs


Input: Consider Input: Sentence: 'a hallway to a bathroom with a sink and mirror'. Replace the letter 'r' with 'x' in the sentence.


Output: a hallway to a bathxoom with a sink and mixxox