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

Ex Input:
Sentence: 'a group of people hanging around holding umbrellas'. Replace the letter 'p' with 'f' in the sentence.

Ex Output:
a grouf of feofle hanging around holding umbrellas


Ex Input:
Sentence: 'a pizza sitting on top of a metal pizza pan'. Replace the letter 'p' with 't' in the sentence.

Ex Output:
a tizza sitting on tot of a metal tizza tan


Ex Input:
Sentence: 'a banana sits between a full coffee cup and a granola bar'. Replace the letter 'a' with 'z' in the sentence.

Ex Output:

z bznznz sits between z full coffee cup znd z grznolz bzr