给定一篇英文文章，提取其中的实体并将其分类为人名、地名和机构名。
文章：“In the Harry Potter series, Harry Potter, Ron Weasley, and Hermione Granger attend Hogwarts School of Witchcraft and Wizardry, a magical school in Scotland.”
人名：Harry Potter, Ron Weasley, Hermione Granger。

地名：Scotland。

机构名：Hogwarts School of Witchcraft and Wizardry。