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

Input: Consider Input: Sentence: 'four people are playing an interesting game in the park'. Replace the letter 'e' with 'x' in the sentence.

Output: four pxoplx arx playing an intxrxsting gamx in thx park


Input: Consider Input: Sentence: 'a hipster riding a skateboard up the side of a wall'. Replace the letter 's' with 'm' in the sentence.

Output: a hipmter riding a mkateboard up the mide of a wall


Input: Consider Input: Sentence: 'a baseball player taking a swing at a ball'. Replace the letter 'n' with 'l' in the sentence.


Output: a baseball player takilg a swilg at a ball