TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a sign sitting on the side of a snow covered slope'. Replace the letter 'e' with 'g' in the sentence.

SOLUTION: a sign sitting on thg sidg of a snow covgrgd slopg

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 sitting at a table having a glass of wine'. Replace the letter 'i' with 'l' in the sentence.

SOLUTION:
a man slttlng at a table havlng a glass of wlne