The man is on a ski boat in the water .
It is probably the case that there is a man wearing a wetsuit on a blue ski boat in a lake .
It is probably the case that there is a man wearing a wetsuit on a blue ski boat in a lake .
It is improbable that there is a man wearing a wetsuit on a blue ski boat in a lake .
There is a man wearing a wetsuit on a blue ski boat in a lake .