Premise: There is a man behind a white minivan , police car driving down the street as a white car pulls onto the street .
Correct statement: There is a better than even chance that a police chase between a van and a police car is being filmed on a city street .
Incorrect statement: It is improbable that a police chase between a van and a police car is being filmed on a city street .
Correct statement: It is impossible that a city street at lunchtime
Incorrect statement: It is certain that a city street at lunchtime
Correct statement: It is impossible that police and a civilian arrive to help a minivan driver change his flat tire .
Incorrect statement: It is almost certain that police and a civilian arrive to help a minivan driver change his flat tire .
Correct statement: There is a better than even chance that a man by a van is waiting for the police .
Incorrect statement: There is little chance that a man by a van is waiting for the police .
Correct statement: It is impossible that a police car is chasing a perpetrator .
Incorrect statement: We believe that a police car is chasing a perpetrator .