Premise: The giraffe 's mouth is closed .
Correct statement: It is probably not the case that the giraffe has eaten sap that has now sealed its mouth shut .
Incorrect statement: It is almost certain that the giraffe has eaten sap that has now sealed its mouth shut .
Correct statement: It is probably not the case that a giraffe has just finished eating .
Incorrect statement: It is almost certain that a giraffe has just finished eating .
Correct statement: We believe that the giraffe did not move its mouth .
Incorrect statement: There is little chance that the giraffe did not move its mouth .
Correct statement: Chances are slight that the giraffe has food in its mouth .
Incorrect statement: We believe that the giraffe has food in its mouth .
Correct statement: There is a very good chance that the giraffe is not eating
Incorrect statement: We doubt that the giraffe is not eating