TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a bunch of red apples next to a few oranges'. Replace the letter 'n' with 'x' in the sentence.

SOLUTION: a buxch of red apples xext to a few oraxges

PROBLEM: Sentence: 'carrots and other vegetables laying on a table'. Replace the letter 'o' with 'd' in the sentence.

SOLUTION: carrdts and dther vegetables laying dn a table

PROBLEM: Sentence: 'an electric train stands on the train tracks'. Replace the letter 'l' with 'i' in the sentence.

SOLUTION:
an eiectric train stands on the train tracks