TASK DEFINITION: In this task, you need to replace a letter in the sentence with another given letter.
PROBLEM: Sentence: 'a man sitting at a table and using his laptop'. Replace the letter 'd' with 'o' in the sentence.

SOLUTION: a man sitting at a table ano using his laptop

PROBLEM: Sentence: 'a dog standing near a potted plant outside'. Replace the letter 'a' with 'j' in the sentence.

SOLUTION: j dog stjnding nejr j potted pljnt outside

PROBLEM: Sentence: 'people are crossing the street through the crosswalk'. Replace the letter 'r' with 'x' in the sentence.

SOLUTION:
people axe cxossing the stxeet thxough the cxosswalk