Premise: Two girls talking while sitting on the stairs .
Correct statement: We believe that two girls are happily talking .
Incorrect statement: It is highly unlikely that two girls are happily talking .
Correct statement: It is unlikely that two girls sit on the stairs in the school .
Incorrect statement: It is probable that two girls sit on the stairs in the school .
Correct statement: It is certain that two girls are talking .
Incorrect statement: It is improbable that two girls are talking .
Correct statement: It is impossible that two girls wearing matching dresses
Incorrect statement: It is probably the case that two girls wearing matching dresses
Correct statement: We believe that the girls are talking about boys .
Incorrect statement: There is little chance that the girls are talking about boys .