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

Ex Input:
Sentence: 'two parrots on a tree next to a metal pan'. Replace the letter 'w' with 'j' in the sentence.

Ex Output:
tjo parrots on a tree next to a metal pan


Ex Input:
Sentence: 'woman pushing a cart of luggage in a transportation terminal'. Replace the letter 'a' with 'w' in the sentence.

Ex Output:
womwn pushing w cwrt of luggwge in w trwnsportwtion terminwl


Ex Input:
Sentence: 'several people are waiting for a subway train'. Replace the letter 'i' with 'r' in the sentence.

Ex Output:

several people are wartrng for a subway trarn