Ключевые слова: apple, back, background, blue, blue background, book, brown, classroom, close, closeup, cognition, college, concept, copy, copy space, detail, education, education concept, grey, grey background, knowledge, learning, library, literature, macro, material, miniature, no people, page, read, reading, red, red background, rough, school, school education, shopping, shopping trolley, space, streetcar, student, study, studying, surface, textbook, texture, textured, trolley, university, wall,