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 mill is a bit or mechanism that employs grain .

SOLUTION: A powder is a device or filter that loses grain .

PROBLEM: You are unknown to find a wheelchair around in a farmers field .

SOLUTION: You are pleased to find a limp around in a farmers field .

PROBLEM: You are likely to find a vegetable in the trees .

SOLUTION:
You are likely to find a thread in the trees .