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 effect of walking around a pavement is getting sore muscles .

SOLUTION: The effect of walking around a course is getting sore muscles .

PROBLEM: You are likely to introduce a start in date event .

SOLUTION: You are unknown to find a calendar in date book .

PROBLEM: You can load a ground floor to help a foot without climbing stairs .

SOLUTION:
You can design a ground floor to anchor a stage without climbing stairs .