TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a boy on the beach playing with a frisbee'. Replace the letter 'h' with 'e' in the sentence.

SOLUTION: a boy on tee beace playing wite a frisbee

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 giraffe standing next to each other'. Replace the letter 'o' with 'v' in the sentence.

SOLUTION:
a grvup vf giraffe standing next tv each vther