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: You are likely to find a stick of butter in a grocery store.

SOLUTION: You are difficult to reserve a purchase of butter in a grocery store .

PROBLEM: A girl can lend you money .

SOLUTION: A university can do you money .

PROBLEM: You are young to seek a planet around in a solar system .

SOLUTION:
You are likely to tour a planet around in a compact v .