Set during Harry Potter's sixth year at Hogwarts, the novel explores the past of Harry's nemesis, Lord Voldemort, and Harry's preparations for the final battle against Voldemort alongside Harry Potter and the Half-Blood Prince's headmaster and mentor Albus Dumbledore.
Head entity: Albus Dumbledore
Tail entity: Harry Potter and the Half-Blood Prince
Relation (head \u2192 tail): characters
Inverse relation (tail \u2192 head): present in work