TASK DEFINITION: Given a sentence, generate a new sentence by performing small changes on the sentence. Here, make sure that the changes are semantically related and syntactically similar to the input. And the generated sentence should have high commonsense plausibility, that is to have reasonable probability of it being true.
PROBLEM: If you want to announce a contract then you should flash a blue pen .

SOLUTION: If you want to sign a pass then you should use a blue pen .

PROBLEM: If you make plenty of my secret , your day will be most memorable .

SOLUTION: If you make contact of my secret , your day will be most memorable .

PROBLEM: If you visit to conduct a production then you should pick a call .

SOLUTION:
If you want to conduct a trial then you should pick a jury.