Harry Potter and the Chamber of Secrets : `Part of series`: Harry Potter literary series. Harry Potter literary series is written by J. K. RowlingJ. K. Rowling wrote The Casual VacancyThe Casual Vacancy has genre Fiction. Fiction : `~Parent genre`: Young-adult fiction
[Human]: I like Harry Potter and the Chamber of Secrets, what else should I read? [Assistant]: Have you read J. K. Rowling's entire Harry Potter series? If not you should definitely start there! [Human]: Are those all young adult fiction? 
They are not actually young adult fiction, but J.K. Rowling wrote another book called The Casual Vacancy which is also not young adult fiction.