TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'the bus is trying to navigate though the london traffic'. Replace the letter 'a' with 'l' in the sentence.

SOLUTION: the bus is trying to nlviglte though the london trlffic

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 parking meter in front of mail boxes on a sidewalk'. Replace the letter 'o' with 't' in the sentence.

SOLUTION:
a parking meter in frtnt tf mail btxes tn a sidewalk