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

Ex Input:
Sentence: 'a man stands next to a basketball as it sits on the floor'. Replace the letter 'n' with 'o' in the sentence.

Ex Output:
a mao staods oext to a basketball as it sits oo the floor


Ex Input:
Sentence: 'a couple of brown bears walking across a lush green field'. Replace the letter 'w' with 'o' in the sentence.

Ex Output:
a couple of broon bears oalking across a lush green field


Ex Input:
Sentence: 'a black and white photograph of flouring mill truck'. Replace the letter 'h' with 'x' in the sentence.

Ex Output:

a black and wxite pxotograpx of flouring mill truck