TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a bike sitting parked next to a cart in front of some boxes'. Replace the letter 't' with 'x' in the sentence.

SOLUTION: a bike sixxing parked nexx xo a carx in fronx of some boxes

PROBLEM: Sentence: 'broccoli and cooked meat arranged on a plate'. Replace the letter 'c' with 'l' in the sentence.

SOLUTION: brolloli and looked meat arranged on a plate

PROBLEM: Sentence: 'men in heavy clothing cross country skiing in snow'. Replace the letter 'm' with 'p' in the sentence.

SOLUTION:
pen in heavy clothing cross country skiing in snow