Ключевые слова: ancient, background, book, bookcase, bookshelf, college, confusion, culture, data, definition, educate, education, encyclopedia, expert, federal, hd, hidef, high, idea, information, intelligence, knowledge, law, learn, library, literary, literature, nobody, novel, objects, old, paper, public, read, research, row, school, scientist, shelf, stack, study, studying, text, textbook, university, wisdom,