The following query in Arabic is taken from the books category. What could be the answer to the question?
أيُّ كتاب من سلسلة "هاري بوتر" لم يظهر فيه "دوبي" الجني المنزلي؟
The answer is Harry Potter and the Sorcerer's Stone, Harry Potter and the Prisoner of Azkaban, Harry Potter and the Half-Blood Prince.