Ключевые слова: audience, auditorium, background, backlight, business, chair, chairs, chamber, cinema, concept, concert, conference, dark, discussion, education, empty, event, hall, indoor, inside, interior, lecture, light, meeting, nobody, performance, presentation, projector, public, rehearsal, room, row, seat, seats, seminar, shaded, show, small, space, study, summit, teaching, theater, theatre, training, workshop,