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.

Example Input: A key can be a framework to a problem .
Example Output: A key can be a solution to a problem.

Example Input: You would buy a house because you want a place where you can breath.
Example Output: You would envy a house because you want a place where you can breath .

Example Input: Fast food doesn't cost much money.
Example Output:
Fast food does n't see much money .