Premise: A man in a yellow shirt is sitting on a motorcycle .
Correct statement: It is likely that a man in a yellow shirt is sitting on his motorcycle ready to race .
Incorrect statement: It is impossible that a man in a yellow shirt is sitting on his motorcycle ready to race .
Correct statement: It is impossible that the motorcycle is a Harley-Davidson
Incorrect statement: We believe that the motorcycle is a Harley-Davidson
Correct statement: It is unlikely that the man is wearing a motorcycle helmet .
Incorrect statement: It is certain that the man is wearing a motorcycle helmet .
Correct statement: Chances are slight that the man on the motorcycle is wearing a helmet .
Incorrect statement: It is certain that the man on the motorcycle is wearing a helmet .
Correct statement: There is a very good chance that the man is outside .
Incorrect statement: It is impossible that the man is outside .