Ключевые слова: absence, amphitheater, architecture, architecture and buildings, arts and entertainment, audience, auditorium, backgrounds, chair, classical concert, classroom, closeup, color image, convention center, copy space, education, empty, entertainment, equipment, event, furniture, group of objects, in a row, indoors, large group of objects, learning, lecture hall, meeting, movie theater, musical theater, no people, objects, outdoors, pattern, performance, popular music concert, red, school building, seat, seminar, sitting, stadium, stage performance space, stage theater, table, theatre, theatrical performance, university,