Premise: A skateboarder performing a kickflip over short stairs .
Correct statement: Chances are about even that a man is skateboarding in a skate park
Incorrect statement: It is highly unlikely that a man is skateboarding in a skate park
Correct statement: It is probable that skateboarder performing tricks in street area
Incorrect statement: It is impossible that skateboarder performing tricks in street area
Correct statement: It is certain that a skateboarder is kickflipping is skateboard .
Incorrect statement: It is improbable that a skateboarder is kickflipping is skateboard .
Correct statement: It is impossible that the skateboarder is Tony Hawk .
Incorrect statement: It is probable that the skateboarder is Tony Hawk .
Correct statement: We believe that the skateboarder is wearing a helmet and knee pads .
Incorrect statement: It is impossible that the skateboarder is wearing a helmet and knee pads .