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

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: 'you are never to old to play with the nintendo wii'. Replace the letter 'e' with 'v' in the sentence.

Ex Output:
you arv nvvvr to old to play with thv nintvndo wii


Ex Input:
Sentence: 'a bathroom with black spots on the wall'. Replace the letter 'a' with 'x' in the sentence.

Ex Output:

x bxthroom with blxck spots on the wxll