original question: how many Fictional Organization Founders does [Hogwarts School of Witchcraft and Wizardry] have?
answer: 4
answer type: Fictional Organization Founder.
auxiliary information: Hogwarts School of Witchcraft and Wizardry, shortened Hogwarts, is a fictional British school of magic for students aged eleven to eighteen, and is the primary setting for the first six books in J.K. Rowling's Harry Potter series. Rowling has suggested that she may have inadvertently taken the name from the hogwort plant, which she had seen at Kew Gardens some time before writing the series, although the names "The Hogwarts" and "Hoggwart" appear in the 1954 Nigel Molesworth book How To Be Topp by Geoffrey Willans. Hogwarts school was voted as the 36th best Scottish educational establishment in a 2008 online ranking, outranking Edinburgh's Loretto School. According to a director of the Independent Schools Network Rankings, it was added to the schools listing "for fun" and was then voted on.
Name the number of Fictional Organization Founders which [Hogwarts School of Witchcraft and Wizardry] has?