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

Input: Consider Input: Sentence: 'a herd of cattle standing on a lush green field'. Replace the letter 'g' with 'f' in the sentence.

Output: a herd of cattle standinf on a lush freen field


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: 'a bus parked in front of a private jet plain at an airport hanger'. Replace the letter 'o' with 'e' in the sentence.


Output: a bus parked in frent ef a private jet plain at an airpert hanger