Premise: Trash litters the ground .
Correct statement: It is probably not the case that a trash bag broken open .
Incorrect statement: We believe that a trash bag broken open .
Correct statement: It is probably not the case that there is a napkin on the ground .
Incorrect statement: It is highly likely that there is a napkin on the ground .
Correct statement: It is unlikely that some of this trash includes paper cups .
Incorrect statement: It is almost certain that some of this trash includes paper cups .
Correct statement: It is probable that there is trash outside
Incorrect statement: There is little chance that there is trash outside
Correct statement: It is highly unlikely that there 's a bag on the sidewalk .
Incorrect statement: There is a very good chance that there 's a bag on the sidewalk .