You will be given a definition of a task first, then some input of the task.
In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

He has nine mothers, all sisters. His skin is the whitest of all the gods, his teeth are made of gold, and he rides a golden-maned horse named Gulltopp. He once turned himself into a seal to retrieve the necklace Brisingamen of Freyja's that was stolen by Loki. He will blow his trumpet, the Gjallarhorn, to signal the start of Ragnarok, when he and Loki will slay each other. For ten points, name this Norse god who lives in Himinbjorg, at the entrance to Asgard, and guards the rainbow bridge, Bifrost.
Output:
History