What is Aberforth Dumbledore's role in the series?
He is the owner of the Hog's Head Inn and Albus Dumbledore's younger brother.
<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 Aberforth Dumbledore's role in the series? [/INST] He is the owner of the Hog's Head Inn and Albus Dumbledore's younger brother. </s>