TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a street light is near a large building'. Replace the letter 'n' with 'c' in the sentence.

SOLUTION: a street light is cear a large buildicg

PROBLEM: Sentence: 'a man walking a horse on a dirt track'. Replace the letter 't' with 's' in the sentence.

SOLUTION: a man walking a horse on a dirs srack

PROBLEM: Sentence: 'there are clothes all over a desk and a bed'. Replace the letter 'e' with 's' in the sentence.

SOLUTION:
thsrs ars clothss all ovsr a dssk and a bsd