Premise: The man is skateboarding on a large brick staircase .
Correct statement: It is impossible that man skateboarding ahead go competition
Incorrect statement: It is certain that man skateboarding ahead go competition
Correct statement: There is a very good chance that a person is doing tricks on his skateboard .
Incorrect statement: There is little chance that a person is doing tricks on his skateboard .
Correct statement: It is highly likely that a man is skateboarding on a staircase outside .
Incorrect statement: Chances are slight that a man is skateboarding on a staircase outside .
Correct statement: It is probably not the case that the man is skateboarding at a school .
Incorrect statement: It is almost certain that the man is skateboarding at a school .
Correct statement: Chances are about even that a person is being dangerous
Incorrect statement: It is highly unlikely that a person is being dangerous