Ключевые слова: audience, auditorium, background, business, business people, businessman, businesswoman, caucasian, close up, communication, company, conference, congress, corporate, crowd, education, entertainment, entrepreneurs, event, female, fingers, fun, group, hall, hands, hands up, happiness, indoor, joy, large, lecture, listening, man, meeting, people, presentation, professional, public, raised hands, russia, seats, seminar, smile, stage, stretch, team, training, up, upwards, workshop,