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: If you want to enhance software then you should learn to program computers .

SOLUTION: If you want to classify software then you should rewrite to program computers .

PROBLEM: The source basically wants java .

SOLUTION: The world basically wants peace.

PROBLEM: You would purchase football because you like the sport .

SOLUTION:
You would hear football because you like the sport .