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: 'a plate topped with waffles, bacon and banana slices'. Replace the letter 'a' with 'k' in the sentence.

SOLUTION: k plkte topped with wkffles, bkcon knd bknknk slices

PROBLEM: Sentence: 'a line of different sized elephants in the water'. Replace the letter 'e' with 'd' in the sentence.

SOLUTION:
a lind of diffdrdnt sizdd dldphants in thd watdr