TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'batter is twisted up as he took a swing at the baseball'. Replace the letter 'h' with 'i' in the sentence.

SOLUTION: batter is twisted up as ie took a swing at tie baseball

PROBLEM: Sentence: 'street sign titled kittery maine state line in green'. Replace the letter 'e' with 'r' in the sentence.

SOLUTION: strrrt sign titlrd kittrry mainr statr linr in grrrn

PROBLEM: Sentence: 'a lot of buses that are in a parking lot'. Replace the letter 's' with 'a' in the sentence.

SOLUTION:
a lot of buaea that are in a parking lot