instruction:
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.
question:
He ended his life as king of Illyricum and went to Elysium after he and his wife fulfilled a prophecy. This son of Telephassa and Agenor, the rulers of Phoenicia, succeeded at a task in which his four brothers could not. At the end of his life he and his wife Harmonia are turned into snakes, but this has occurred well after he has sown some dragon's teeth. FTP, name this brother of Europa and founder of  Thebes.
answer:
Social Science


question:
A maximum independent set for this data structure can be found in linear time by adding alternating levels. In this structure, any two vertices or nodes must be connected by a single simple path, and thus it is connected and acyclic. By using (*) union-find with disjoint sets, one type of this structure containing all the vertices of a connected graph can be constructed. One variety of this data structure can be used to easily implement a binary search. This structure also comes in red-black and self-balancing-binary varieties. For 10 points, identify this data structure from computer science, a hierarchical graph in which "leaf" nodes ultimately flow from a "root" node.
answer:
Science


question:
This deity was once assisted by the winds in breaking the fighting spirit of the river Xanthus, or Scamander, thus saving the life of Achilles. His children include a man-eating monster who was killed by Heracles after stealing some of Geryon's cattle from him. This father of Cacus and the Cabeiri gave his apprentice Cedalion to the blind Orion as a guide. This god's consorts include the youngest of the Graces, Aglaia, whose mother Eurynome had cared for him after his ejection by Hera from Mount Olympus. His attempted rape of Athena led to the birth of Erichthonius, while Helios discovered that this god's first wife was having an affair with Ares. For 10 points, identify this husband of Aphrodite, a crippled smith god from Greek mythology.
answer:

Social Science