TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man dressed in a knight costume riding a horse performing at a show'. Replace the letter 'e' with 'j' in the sentence.

SOLUTION: a man drjssjd in a knight costumj riding a horsj pjrforming at a show

PROBLEM: Sentence: 'a woman sitting on a wooden chair holding a cat'. Replace the letter 'n' with 'q' in the sentence.

SOLUTION: a womaq sittiqg oq a woodeq chair holdiqg a cat

PROBLEM: Sentence: 'a man riding a snowboard down a snow covered slope'. Replace the letter 'i' with 'h' in the sentence.

SOLUTION:
a man rhdhng a snowboard down a snow covered slope