TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a bunch of giraffe stand around on a dirt covered area'. Replace the letter 'e' with 'p' in the sentence.

SOLUTION: a bunch of giraffp stand around on a dirt covprpd arpa

PROBLEM: Sentence: 'a man on a surfboard riding on the waters waves'. Replace the letter 's' with 'k' in the sentence.

SOLUTION: a man on a kurfboard riding on the waterk wavek

PROBLEM: Sentence: 'a white sink and toilet in a room'. Replace the letter 's' with 'n' in the sentence.

SOLUTION:
a white nink and toilet in a room