Premise: A woman in a red coat reviews an unseen sheet on a podium while a man in blue tie reviews his own podium and plays an acoustic guitar .
Correct statement: It is certain that a red-coated woman is at a podium while a guitar player in a blue tie is at his own podium .
Incorrect statement: It is impossible that a red-coated woman is at a podium while a guitar player in a blue tie is at his own podium .