Premise: A guy in a leather jacket walking by a corner store .
Correct statement: We believe that a car is driving by .
Incorrect statement: It is improbable that a car is driving by .
Correct statement: It is certain that a man is walking down the street
Incorrect statement: It is impossible that a man is walking down the street
Correct statement: There is a very good chance that people walk to there corner store .
Incorrect statement: It is unlikely that people walk to there corner store .
Correct statement: It is highly unlikely that a man is getting some cigarettes
Incorrect statement: It is highly likely that a man is getting some cigarettes
Correct statement: It is probably not the case that a guy walks by a drugstore .
Incorrect statement: It is certain that a guy walks by a drugstore .