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

Ex Input:
Sentence: 'stone and white colored structure in front of white modern building'. Replace the letter 'r' with 'p' in the sentence.

Ex Output:
stone and white coloped stpuctupe in fpont of white modepn building


Ex Input:
Sentence: 'a study features the color green and old-fashioned furniture'. Replace the letter 'e' with 'd' in the sentence.

Ex Output:
a study fdaturds thd color grddn and old-fashiondd furniturd


Ex Input:
Sentence: 'a wooden table topped with a white plate covered in food'. Replace the letter 'o' with 'u' in the sentence.

Ex Output:

a wuuden table tupped with a white plate cuvered in fuud