TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'giraffe standing on a pile of rocks reaching up to a branch with its mouth'. Replace the letter 'g' with 'n' in the sentence.

SOLUTION: niraffe standinn on a pile of rocks reachinn up to a branch with its mouth

PROBLEM: Sentence: 'a man sitting on a luggage cart inside of an airport'. Replace the letter 't' with 'a' in the sentence.

SOLUTION: a man siaaing on a luggage cara inside of an airpora

PROBLEM: Sentence: 'a young child learning how to ski down a slope'. Replace the letter 'p' with 'u' in the sentence.

SOLUTION:
a young child learning how to ski down a sloue