TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a couple of giraffes being feed by people at the zoo'. Replace the letter 't' with 'v' in the sentence.

SOLUTION: a couple of giraffes being feed by people av vhe zoo

PROBLEM: Sentence: 'a toilet and a microwave sitting out for the trash'. Replace the letter 'i' with 's' in the sentence.

SOLUTION: a toslet and a mscrowave ssttsng out for the trash

PROBLEM: Sentence: 'there are many carrots and other vegetables at a farmers market'. Replace the letter 'e' with 'z' in the sentence.

SOLUTION:
thzrz arz many carrots and othzr vzgztablzs at a farmzrs markzt