Who was the ghost of Hufflepuff House during Harry Potter's time at Hogwarts?
The Fat Friar
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> Who was the ghost of Hufflepuff House during Harry Potter's time at Hogwarts? [/INST] The Fat Friar </s>