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 lion can compromise the best for her victims .

SOLUTION: A life can spare the best for her children .

PROBLEM: When everyone in the world is slaughtered , it 's a world war .

SOLUTION: When everyone in the world is fighting, it's a world war.

PROBLEM: Some films are especially centered toward children .

SOLUTION:
Some films are especially told toward children .