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

Ex Input:
Sentence: 'people are standing outside in the parking lot'. Replace the letter 'i' with 'z' in the sentence.

Ex Output:
people are standzng outszde zn the parkzng lot


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

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


Ex Input:
Sentence: 'man holding pair of red handled scissor in front of face'. Replace the letter 'i' with 'f' in the sentence.

Ex Output:

man holdfng pafr of red handled scfssor fn front of face