TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a shower, toilet and sink are highlights in this clean bathroom'. Replace the letter 'e' with 'd' in the sentence.

SOLUTION: a showdr, toildt and sink ard highlights in this cldan bathroom

PROBLEM: Sentence: 'wine is being poured into a wine glass with a syringe'. Replace the letter 'e' with 'y' in the sentence.

SOLUTION: winy is bying pouryd into a winy glass with a syringy

PROBLEM: Sentence: 'lots of boats anchored in a harbor'. Replace the letter 'f' with 'a' in the sentence.

SOLUTION:
lots oa boats anchored in a harbor