Who teaches Defense Against the Dark Arts during Harry's second year at Hogwarts?
Gilderoy Lockhart
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> Who teaches Defense Against the Dark Arts during Harry's second year at Hogwarts? [/INST] Gilderoy Lockhart </s>