Question: In the Harry Potter books there are 4 houses at Hogwarts School. Three of them are Gryffendor, Ravenclaw and Slytherin. Name the fourth.
Answer: The Chamber of Secrets; Hogwarts quidditch teams; N.E.W.T.; Hogwarts School of Witchcraft and Wizardry; Hogwart's House System; Hogwarts House Points; Hogwart's School of Witchcraft And Wizardry; The Hogwarts Express; Hogwarts School; NEWTS; Howgarts; O.W.L.; Hogwarts School of Witchcraft and Wizardery; Chamber of the Silent; Hogwarts School for Witchcraft and Wizardry; Hogwarts Castle; Ravenclaw; Chamber of Secrets; Gryffindor; Hufflepuff; Locations in Hogwarts; Founders of Hogwarts; O.W.L.s; Hogwarts; NEWT; Hogwarts layout; Chamber of secrets; Hogwarts houses; Battle of hogwarts; Griphindor; Slitherin; Ordinary Wizarding Levels; Owlery; Hogwarts High School; Ordinary Wizarding Level; Hogwarts School Of Witchcraft And Wizardry; Nastily Exhausting Wizarding Test; The chamber of secrets; Rowana ravenclaw; Hogwarts Floor Directory; Hogwarts Houses; Hogwards; List of Hogwarts Quidditch Teams; Hogwarts Express; Griffindor; Hogwart's; Room of Requirement; Slytherin; Hogwarts castle