TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a person jumping up in the air on a snowboard'. Replace the letter 'r' with 'o' in the sentence.

SOLUTION: a peoson jumping up in the aio on a snowboaod

PROBLEM: Sentence: 'a yellow fire hydrant sitting on the sidewalk'. Replace the letter 'o' with 'd' in the sentence.

SOLUTION: a yelldw fire hydrant sitting dn the sidewalk

PROBLEM: Sentence: 'a person crouching down in front of an open refrigerator'. Replace the letter 'a' with 'l' in the sentence.

SOLUTION:
l person crouching down in front of ln open refrigerltor