Premise: Three traffic lights hang over Wilson Street .
Correct statement: It is impossible that the traffic lights hanging over the street do not work
Incorrect statement: It is certain that the traffic lights hanging over the street do not work
Correct statement: It is impossible that the traffic lights over Wilson street are all green .
Incorrect statement: It is certain that the traffic lights over Wilson street are all green .
Correct statement: It is highly likely that the traffic lights are easily visible over Wilson Street .
Incorrect statement: It is probably not the case that the traffic lights are easily visible over Wilson Street .
Correct statement: We believe that there are possibly two or three lights on Wilson Street .
Incorrect statement: It is probably not the case that there are possibly two or three lights on Wilson Street .
Correct statement: It is impossible that the three lights over Wilson Street are all red .
Incorrect statement: It is certain that the three lights over Wilson Street are all red .