TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a mouse and keyboard sitting on a wooden desk'. Replace the letter 'a' with 'n' in the sentence.

SOLUTION: n mouse nnd keybonrd sitting on n wooden desk

PROBLEM: Sentence: 'the kitchen has a big screen tv and a lot of counter space'. Replace the letter 'h' with 'z' in the sentence.

SOLUTION: tze kitczen zas a big screen tv and a lot of counter space

PROBLEM: Sentence: 'dessert item displayed on plate with fruit for consumption'. Replace the letter 's' with 'c' in the sentence.

SOLUTION:
deccert item dicplayed on plate with fruit for concumption