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.

Input: Consider Input: 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.

Output: Science


Input: Consider Input: At the end of the novel, the title character's daughter marries Aaron Winthrop, who is happy to allow the title character to live with them. After the opium addict Molly Farren dies in the snow, 16 years pass, and the skeleton of Dunstan Cass is found in a drained pit, along with the title character's stolen gold. FTP, identify this 1861 novel, which ends with Godfrey Cass admitting that Eppie is his daughter, the story of a linen-weaver from Raveloe which was written by George Eliot.

Output: Literature


Input: Consider Input: A cult of this deity was characterized by the sacrifice of puppies to Enyalio. The eagle owl, woodpecker, and vulture are sacred to this deity. This god exacts revenge for the rape of his daughter Alcippe and is forced to appear in a tribunal held by the Olympians held on a hill which later bore this god's name. With his lover, this father of Harmonia is caught in a (*) net crafted by Hephaestus. Cadmus slew a water-dragon sacred to this deity, who is known for only consorting with Aphrodite. For 10 points, name this Greek god of war.


Output: Social Science


