Ключевые слова: attendance, attention, audience, auditorium, back, black, business, businessman, businesspeople, chair, communications, conference, congress, convention, crowd, cultural, culture, discussion, education, educational, ethnic, event, exhibition, finance, forum, global, group, hall, indoor, international, leader, learn, listen, man, meetings, people, plant, presentation, professional, room, seat, seminar, session, show, speaker, teacher, teaching,