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 pencil is discarded for writing .

SOLUTION: A theme is used for b .

PROBLEM: A lion can compromise the best for her victims .

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

PROBLEM: Several online sites report the observation .

SOLUTION:
Several online sites report the conflict .