TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man is posing in a desert, leaning on a sign with an image of a camel on it'. Replace the letter 'i' with 'r' in the sentence.

SOLUTION: a man rs posrng rn a desert, leanrng on a srgn wrth an rmage of a camel on rt

PROBLEM: Sentence: 'a man that is throwing a frizbee in the woods'. Replace the letter 'g' with 'u' in the sentence.

SOLUTION: a man that is throwinu a frizbee in the woods

PROBLEM: Sentence: 'a parrot sitting on a branch looking down'. Replace the letter 'o' with 'r' in the sentence.

SOLUTION:
a parrrt sitting rn a branch lrrking drwn