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

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

PROBLEM: A tongue can help in the art of kissing.

SOLUTION: A fox can possess in the art of kissing .

PROBLEM: You are likely to invest a margin in a note .

SOLUTION:
You are likely to find a spoon in a bowl.