TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a cat got caught hiding in the cupboard'. Replace the letter 'i' with 'u' in the sentence.

SOLUTION: a cat got caught hudung un the cupboard

PROBLEM: Sentence: 'the dog lies inside a purple and white collapsable chair'. Replace the letter 'n' with 'j' in the sentence.

SOLUTION: the dog lies ijside a purple ajd white collapsable chair

PROBLEM: Sentence: 'people are standing outside in the parking lot'. Replace the letter 'i' with 'z' in the sentence.

SOLUTION:
people are standzng outszde zn the parkzng lot