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: People with money can box for items for sale .

SOLUTION: People with money can ay for items for sale .

PROBLEM: You can't see the view if you don't scale the mountain.

SOLUTION: You ca n't see the issue if you do n't scale the mountain .

PROBLEM: If you want to enjoy the meeting of your friends then you should relax .

SOLUTION:
If you bother to enjoy the company of your friends then you should relax .