Sitting at a table with beer empty beer mugs on it one brother is has a birthday cake sliced with sprinkler lit up while the younger brother is smiling with his eyes closed .
It is improbable that there are only two people at this birthday party .
It is improbable that there are only two people at this birthday party .
It is almost certain that there are only two people at this birthday party .
There are only two people at this birthday party .