TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a person who is looking at their cell phone'. Replace the letter 'o' with 'b' in the sentence.

SOLUTION: a persbn whb is lbbking at their cell phbne

PROBLEM: Sentence: 'an image of a small galley-style kitchen pointed towards a skinny door'. Replace the letter 's' with 'i' in the sentence.

SOLUTION: an image of a imall galley-ityle kitchen pointed towardi a ikinny door

PROBLEM: Sentence: 'a horse sticking its head out of a pen'. Replace the letter 'a' with 'g' in the sentence.

SOLUTION:
g horse sticking its hegd out of g pen