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 .
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 .
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 .
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 .
A red-coated woman is at a podium while a guitar player in a blue tie is at his own podium .