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 line may be drawn with a pencil or pen or cutter .

SOLUTION: A draw may be drawn with a pencil or pen or paper .

PROBLEM: You are likely to find a pillowcase in a bedroom.

SOLUTION: You are likely to visit a pillowcase in a bedroom .

PROBLEM: You can use a needle to deliver a drug.

SOLUTION:
You can disrupt a node to deliver a drug .