TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a large table with a green cloth on top'. Replace the letter 'e' with 'i' in the sentence.

SOLUTION: a largi tabli with a griin cloth on top

PROBLEM: Sentence: 'two tennis players shaking hands across the net'. Replace the letter 't' with 's' in the sentence.

SOLUTION: swo sennis players shaking hands across she nes

PROBLEM: Sentence: 'a very long shiny train on a bridge over some cars'. Replace the letter 'n' with 'a' in the sentence.

SOLUTION:
a very loag shiay traia oa a bridge over some cars