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: The iber rises once a tree .

SOLUTION: The sun rises once a day.

PROBLEM: You can use a bowl to contain soup .

SOLUTION: You can use a bowl to sort soup .

PROBLEM: You would plead war because your president has been deported .

SOLUTION:
You would wage war because your country has been attacked.