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: An x is used for communicating through the postal system .

SOLUTION: An envelope is used for reading through the postal system .

PROBLEM: The effect of clicking a bar feature is being passive for a while .

SOLUTION: The effect of wearing a television show is being passive for a while .

PROBLEM: People often belong to a political party, which advises them on how to vote.

SOLUTION:
People often belong to a political party , which asks them on how to vote .