Ключевые слова: adult, african, american, authentic, business, businessman, businessperson, businesswoman, caucasian, conference, convention, corporate, coworker, crowd, diverse, education, entrepreneur, ethnic, event, female, film, formal, glasses, group, happy, inside, job, learning, lecture, looking, male, man, meeting, modern, natural, person, presentation, professional, real, sitting, smile, smiling, success, suit, team, training, video, woman, worker, working,