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

PROBLEM: Sentence: 'carrots and other vegetables laying on a table'. Replace the letter 'o' with 'd' in the sentence.

SOLUTION: carrdts and dther vegetables laying dn a table

PROBLEM: Sentence: 'two people walk by a wall with graffiti'. Replace the letter 'a' with 'k' in the sentence.

SOLUTION:
two people wklk by k wkll with grkffiti