What is the name of the author of 'Advanced Potion-Making,' the book Harry uses in his sixth year Potions class?
Libatius Borage
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> What is the name of the author of 'Advanced Potion-Making,' the book Harry uses in his sixth year Potions class? [/INST] Libatius Borage </s>