Ключевые слова: assistant, attractive, business, businessman, camera, caucasian, class, classroom, college, conference, congress, corporate, course, crowd, education, event, forum, group, hand, indoors, journalist, learn, lecture, lecturer, lesson, listeners, live, manager, meeting, mobile, panorama, participants, phone, photo, photojournalist, presentation, professional, public, school, shooting, startup, streaming, student, stylish, trainee, training, university, workshop,