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?
Sentence (from "Potions in Harry Potter"): Many are mentioned in potions class at Hogwarts, which is taught by Severus Snape in books one to five and Horace Slughorn in books six and seven.
Relevant evidence: Yes