Men in the business suits are crossing the street , and there are people with placards are gathering on the street .
It is certain that men are in a building working while people with placards sit in a hotel lobby .
It is impossible that men are in a building working while people with placards sit in a hotel lobby .
It is certain that men are in a building working while people with placards sit in a hotel lobby .
Men are in a building working while people with placards sit in a hotel lobby .