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.

Input: Consider Input: A snowball is used to defend oneself against an alert .

Output: A chain is used to store oneself against an attack .


Input: Consider Input: A teacher can ask whether a student know the answer to a question.

Output: A body can ask whether a student know the answer to a question .


Input: Consider Input: The organism is encased in a bone implant called a pen .


Output: The brain is encased in a bone mass called a skull.