Premise: Multiple students sitting on stairs at a school .
Correct statement: There is a very good chance that students are hanging out together .
Incorrect statement: It is impossible that students are hanging out together .
Correct statement: There is a very good chance that the students are taking a break .
Incorrect statement: It is highly unlikely that the students are taking a break .
Correct statement: It is impossible that many students are in strike to fulfil their demand .
Incorrect statement: We believe that many students are in strike to fulfil their demand .
Correct statement: It is probably not the case that a group of students are waiting for their teacher at the stairs .
Incorrect statement: It is almost certain that a group of students are waiting for their teacher at the stairs .
Correct statement: It is probably not the case that students are waiting for their teacher at school .
Incorrect statement: It is certain that students are waiting for their teacher at school .