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

Input: Consider Input: Sentence: 'a open entrance leading to a set of closed doors'. Replace the letter 'd' with 'f' in the sentence.

Output: a open entrance leafing to a set of closef foors


Input: Consider Input: Sentence: 'a man wearing a hat has his cell phone to his ear'. Replace the letter 'g' with 'w' in the sentence.

Output: a man wearinw a hat has his cell phone to his ear


Input: Consider Input: Sentence: 'three people watching something and one holding a remote sontrol'. Replace the letter 'l' with 'f' in the sentence.


Output: three peopfe watching something and one hofding a remote sontrof