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.

An island is for being surrounded by water.
An island is for being surrounded by world .

You would roam outside for an evening because you want to see the turtles .
You would scream outside for an evening because you want to see the stars .

The time to unleash action is now .

The time to take action is now.