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 wash your car then you should get a lemon .

SOLUTION: If you want to scratch your car then you should get a handle .

PROBLEM: If you want to post a message then you should have an email.

SOLUTION: If you want to find a message then you should have an email .

PROBLEM: You can invent a point of pants to numb your legs .

SOLUTION:
You can donate a team of pants to reinforce your legs .