TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a train moving on a track during the day'. Replace the letter 't' with 'q' in the sentence.

SOLUTION: a qrain moving on a qrack during qhe day

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: 'a plate of food consisting of pasta and bread'. Replace the letter 'o' with 'k' in the sentence.

SOLUTION:
a plate kf fkkd cknsisting kf pasta and bread