<prompt> Taja kitabu cha JK Rowling.  <response>: J.K. Rowling ameandika vitabu kadhaa, vikiwemo Harry Potter na Jiwe la Mchawi, Harry Potter na Chumba cha Siri, Harry Potter na Mfungwa wa Azkaban, Harry Potter na Goblet of Fire na Harry Potter na Order of the Phoenix. 