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.

You are likely to find a shark around in ocean.
You are likely to seem a shark around in ocean .

You are likely to find a monkey in a friend's house.
You are likely to wait a pan in a friend 's house .

People ca n't searched underwater , except using special contacts .

People ca n't breathe underwater , W using special extensions .