question: When was the cast born who was a cast of J. K. Rowling's series?
answer: 8 August 1987
context: Title: Fictional universe of Harry Potter
  Passage: The fictional universe of British author J. K. Rowling's "Harry Potter" series of fantasy novels comprises two distinct societies: the Wizarding World and the Muggle world.  The Muggle world is the series' name for the world inhabited by the non-magical majority, with which the Wizarding World exists coextensively, albeit mostly remaining hidden from the non-magical humans.  The plot of the series is set in 1990s Britain, but in a veiled and separate shadow society wherein magic is commonly used and practiced, and those who can use it live in self-enforced seclusion, hiding their abilities from the rest of the world.  The term "Wizarding World" refers to the global wizard community that lives hidden in parallel with the Muggle world; the different terms refer to different communities within the same area rather than separate planets or worlds.  Any new works taking place in this universe are released under the "J. K. Rowling's Wizarding World" brand.
  Title: Harry Potter (character)
  Passage: Harry James Potter is the title character and protagonist of J. K. Rowling's "Harry Potter" series.  The majority of the books' plot covers seven years in the life of the orphan Potter, who, on his eleventh birthday, learns he is a wizard.  Thus, he attends Hogwarts School of Witchcraft and Wizardry to practise magic under the guidance of the kindly headmaster Albus Dumbledore and other school professors.  Harry also discovers that he is already famous throughout the novel's magical community, and that his fate is tied with that of Lord Voldemort, the internationally feared Dark Wizard and murderer of his parents, Lily and James.
  Title: Harry Potter and the Deathly Hallows – Part 1
  Passage: Harry Potter and the Deathly Hallows – Part 1 is a 2010 British-American fantasy film directed by David Yates and distributed by Warner Bros.  Pictures.  It is the first of two cinematic parts based on the novel of the same name by J. K. Rowling and features an ensemble cast.  The film, which is the seventh and penultimate installment in the "Harry Potter" film series, was written by Steve Kloves and produced by David Heyman, David Barron, and Rowling.
  Title: Harry Potter (film series)
  Passage: Harry Potter is a British-American film series based on the "Harry Potter" novels by author J. K. Rowling.  The series is distributed by Warner Bros. and consists of eight fantasy films, beginning with "Harry Potter and the Philosopher's Stone" (2001) and culminating with "Harry Potter and the Deathly Hallows – Part 2" (2011).  A spin-off prequel series will consist of five films, starting with "Fantastic Beasts and Where to Find Them" (2016).  The "Fantastic Beasts" films mark the beginning of a shared media franchise known as J. K. Rowling's Wizarding World.
  Title: Katie Leung
  Passage: Katie Liu Leung (born 8 August 1987) is a Scottish film, television, and stage actress.  She played Cho Chang, the first love interest for lead character Harry Potter in the Harry Potter film series.  In 2012, Leung made her stage debut in the play "Wild Swans".  Leung has an interest in painting and photography and studied art and design at the University of the Arts, London.
  Title: Pottermore
  Passage: Pottermore is the digital publishing, e-commerce, entertainment and news company from J.K. Rowling and is a global digital publisher of Harry Potter and J. K. Rowling's Wizarding World.  It offers news, features, and articles as well as new and previously unreleased writing by J.K. Rowling.  The site features Rowling's thoughts, several pages of unpublished text, and a sales resource for e-book and audiobook versions of the seven "Harry Potter" novels.
citations: Harry Potter (character) Katie Leung