Ключевые слова: academic, audience, business, businessmen, businesspeople, businesswomen, caucasian, chairs, coaching, colleagues, conference, conference hall, congress, corporate, educative, educator, eyeglasses, formal wear, gesture, gesturing, hand up, indoors, information, lecture, lecturer, listeners, meeting, men, participants, people, presentation, profession, professional occupation, question, seminar, sit, smiling, speaker, women,