Premise: Two people in full attire fencing in a gymnasium with one onlooker from the bleachers in the background .
Correct statement: Chances are about even that two people fence in a gym while a single person waits to take his turn on the bleachers
Incorrect statement: There is almost no chance that two people fence in a gym while a single person waits to take his turn on the bleachers
Correct statement: Chances are about even that there is a fencing competition happening in a gym .
Incorrect statement: It is almost certain that there is a fencing competition happening in a gym .
Correct statement: It is probably the case that two fencers practice while their coach looks on .
Incorrect statement: It is impossible that two fencers practice while their coach looks on .
Correct statement: It is impossible that the finals of a tournament are being held .
Incorrect statement: It is probable that the finals of a tournament are being held .
Correct statement: It is impossible that olympic fencing trials have commenced .
Incorrect statement: There is a very good chance that olympic fencing trials have commenced .