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.

Ex Input:
Norman and Jensen created triangles in which they plot chemical species according to this quantity. In one model of this quantity, electrons distribute to minimize it. Besides the Allred-Rochow definition, Mulliken's original definition of this quantity involved taking the mean of the(*) electron affinity and the first ionization energy. Dissociation energies between two elements are used to calculate the Pauling scale of this quantity, on which fluorine has the highest value. For 10 points, name this property that refers to an atom's ability to attract electrons.

Ex Output:
Science


Ex 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.

Ex Output:
Science


Ex Input:
The out-of-season blooming of a begonia tree is seen as a bad sign in this work, and in the end the protagonist ends up being asked to serve at court and it is told that he became a bodhisattva. After one member of the central family in this work becomes a second degree consort, a visit by her sets off the transformation of the two family compounds into the Takuanyuan. Another character in this work had a coffin already made when a priest and a monk come along and helped him and Phoenix recover. One figure in this work brings a stone to life by touching it, which eventually began watering a crimson flower, and it eventually ended up in the mouth of Pao-yu. FTP, identify this novel by Cao Xueqin.

Ex Output:

Literature