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

Ex Input:
Sentence: 'a clean, sterile bathroom with a shower, toilet, and sink'. Replace the letter 'n' with 'k' in the sentence.

Ex Output:
a cleak, sterile bathroom with a shower, toilet, akd sikk

Ex Input:
Sentence: 'a girl sitting in a chair eating a slice of pizza'. Replace the letter 'i' with 'x' in the sentence.

Ex Output:
a gxrl sxttxng xn a chaxr eatxng a slxce of pxzza

Ex Input:
Sentence: 'adult man on grassy field playing disc game'. Replace the letter 'n' with 'l' in the sentence.

Ex Output:
adult mal ol grassy field playilg disc game