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: 'a herd of black cattle grazing and lounging in a green field'. Replace the letter 'a' with 'q' in the sentence.

Ex Output:
q herd of blqck cqttle grqzing qnd lounging in q green field


Ex Input:
Sentence: 'a pizza pocket is sitting on aluminum foil on the stove'. Replace the letter 'o' with 'x' in the sentence.

Ex Output:

a pizza pxcket is sitting xn aluminum fxil xn the stxve