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

Input: Consider Input: Sentence: 'an old rusty car sits outside of an old building'. Replace the letter 'o' with 'r' in the sentence.

Output: an rld rusty car sits rutside rf an rld building


Input: Consider Input: Sentence: 'a man in blazer holding a tie over his eyes'. Replace the letter 's' with 'e' in the sentence.

Output: a man in blazer holding a tie over hie eyee


Input: Consider Input: Sentence: 'a fire hydrant that is sitting on the sidewalk'. Replace the letter 'd' with 'm' in the sentence.


Output: a fire hymrant that is sitting on the simewalk