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: You would view a text because you want watch a situation .
Example Output: You would move a video because you want watch a movie .

Example Input: You would sign a contract because you want to restore a house .
Example Output: You would sign a contract because you want to buy a house.

Example Input: Some fish swim in schools while others are solitary.
Example Output:
Some mutants swim in groups while others are solitary .