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 b can board a foot or bench .

SOLUTION: A passenger can smoke a port or cave .

PROBLEM: A sugar is for the DNA to convert into energy .

SOLUTION: A sugar is for the body to convert into bread .

PROBLEM: You are likely to find a monkey in soup.

SOLUTION:
You are likely to try a monkey in soup .