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

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

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

Input: Consider Input: Sentence: 'a white plate topped with meat and greens'. Replace the letter 's' with 'b' in the sentence.

Output: a white plate topped with meat and greenb

Input: Consider Input: Sentence: 'this is a snowboarder getting air off of a jump'. Replace the letter 'a' with 'c' in the sentence.
Output: this is c snowbocrder getting cir off of c jump