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.

[Q]: You can equip a backdoor to stay on a door .
[A]: You can use a shotgun to knock on a shop .


[Q]: If you want to post a message then you should have an email.
[A]: If you want to find a message then you should have an email .


[Q]: Designing software is for helping computers that are n't smart enough out .
[A]:
Recommended software is for helping beings that are n't smart enough yet .