Premise: A man in a black martial arts suit unsheathes a sword on a training mat in a field .
Correct statement: Chances are about even that the man is in a martial arts competition .
Incorrect statement: It is almost certain that the man is in a martial arts competition .
Correct statement: It is highly likely that a man unsheathes the sword against his opponent in a training .
Incorrect statement: It is probably not the case that a man unsheathes the sword against his opponent in a training .
Correct statement: It is certain that the man has taken martial arts classes .
Incorrect statement: There is almost no chance that the man has taken martial arts classes .
Correct statement: It is probably the case that the black belt draws his sword for practice .
Incorrect statement: It is probably not the case that the black belt draws his sword for practice .
Correct statement: It is impossible that a man hits a mat with a sword .
Incorrect statement: It is certain that a man hits a mat with a sword .