TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'traffic congestion with cars and an electric tram'. Replace the letter 'a' with 'k' in the sentence.

SOLUTION: trkffic congestion with ckrs knd kn electric trkm

PROBLEM: Sentence: 'a patio filled with white tables and chairs covered with umbrellas'. Replace the letter 'o' with 'e' in the sentence.

SOLUTION: a patie filled with white tables and chairs cevered with umbrellas

PROBLEM: Sentence: 'a close-up of a plate of food containing broccoli'. Replace the letter 'e' with 'o' in the sentence.

SOLUTION:
a closo-up of a plato of food containing broccoli