TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'this is a seafood platter with lobster and corn on the cob'. Replace the letter 't' with 'z' in the sentence.

SOLUTION: zhis is a seafood plazzer wizh lobszer and corn on zhe cob

PROBLEM: Sentence: 'a large elephant that has people all around it'. Replace the letter 'h' with 'm' in the sentence.

SOLUTION: a large elepmant tmat mas people all around it

PROBLEM: Sentence: 'a couple of giraffe standing next to each other near a fence'. Replace the letter 'f' with 'j' in the sentence.

SOLUTION:
a couple oj girajje standing next to each other near a jence