Ключевые слова: adult, audience, auditorium, board, business, campus, center, chair, class, classroom, college, conference, convention, education, empty, furniture, grand, hall, indoors, inside, interior, learn, learning, lecture, lecturer, light, meeting, modern, movie, new, nobody, presentation, room, row, school, screen, seat, seating, seminar, session, stage, study, table, teaching, theater, theatre, training, university, visual, work,