Question: A list of potions used in the "Harry Potter" series, mentioned in potions class at Hogwarts, which is taught by Severus Snape in books one to five,  Severus Snape is a fictional character in which author's "Harry Potter" series?
{'answer': 'J. K. Rowling', 'supporting_facts': [['Potions in Harry Potter', 1], ['Severus Snape', 0]]}