Premise: Four people are sitting down on a sidewalk .
Correct statement: It is impossible that the people are having a cigarette .
Incorrect statement: It is certain that the people are having a cigarette .
Correct statement: It is impossible that the people are being questioned by a police officer .
Incorrect statement: It is probably the case that the people are being questioned by a police officer .
Correct statement: There is a better than even chance that four women are sitting on the sidewalk
Incorrect statement: It is impossible that four women are sitting on the sidewalk
Correct statement: It is almost certain that several people are sitting down .
Incorrect statement: There is little chance that several people are sitting down .
Correct statement: There is a better than even chance that four students are sitting to have a chat .
Incorrect statement: It is improbable that four students are sitting to have a chat .