TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a zebra standing by a pile of large rocks'. Replace the letter 'i' with 'x' in the sentence.

SOLUTION: a zebra standxng by a pxle of large rocks

PROBLEM: Sentence: 'a group of women are sitting at a table eating lunch'. Replace the letter 'e' with 'k' in the sentence.

SOLUTION: a group of womkn ark sitting at a tablk kating lunch

PROBLEM: Sentence: 'a woman reclining in a lawn chair using two cell phones at the same time'. Replace the letter 'i' with 'm' in the sentence.

SOLUTION:
a woman reclmnmng mn a lawn chamr usmng two cell phones at the same tmme