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 teddy bear dressed in denim is laying on a floor'. Replace the letter 'i' with 'd' in the sentence.

SOLUTION: a teddy bear dressed dn dendm ds laydng on a floor

PROBLEM: Sentence: 'two boys smile as they take a bath'. Replace the letter 's' with 'j' in the sentence.

SOLUTION:
two boyj jmile aj they take a bath