TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man eats while holding himself up in a one-hand push up position'. Replace the letter 'i' with 'p' in the sentence.

SOLUTION: a man eats whple holdpng hpmself up pn a one-hand push up posptpon

PROBLEM: Sentence: 'a horse in a country field with woods in the background'. Replace the letter 'a' with 'i' in the sentence.

SOLUTION: i horse in i country field with woods in the bickground

PROBLEM: Sentence: 'a rose that is sitting in a vase'. Replace the letter 'r' with 'j' in the sentence.

SOLUTION:
a jose that is sitting in a vase