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:
Several of his early works, including such operas as Cleonice, Demofoonte, and Artaserse, were written with librettist Pietro Metastasio. He had begun composing an opera based on the Song of Roland, but the discovery that Niccolo Piccini was given the same libretto to work on sparked a rivalry in the Parisian press and motivated him to compose Armide. Collaboration with the librettist Calzabigi resulted in the composition of the ballets Semiramide and Don Juan, as well as an opera featuring the "Dance of the Blessed Spirits" and another in whose preface he declared his intent to "restrict music to its true office of serving poetry. " FTP, identify this German classical composer of "reform" operas such as Alceste and Orfeo et Euridice.
answer:
Fine Arts


question:
Hans-Georg Gadamer argued that the ideal described in this work is heuristic in nature in an essay about this work's author "and the poets. " Books six and seven of this work assert that knowledge is ultimately for the Good, which shines on intelligible essences like the sun. It asserts that love is "a tyrant" over man, and compares imaginative, real, intelligent, and abstract levels of thought to a line divided into four segments. In its first book, Thrasymachus describes justice as "the advantage of the stronger," while its seventh book likens people unaware of Forms to humans viewing shadows on the wall of a cave. For 10 points, name this Platonic dialogue that describes an ideal society.
answer:
Social Science


question:
The sum of the reciprocals of Sylvester's Sequence converge to this number, and in ZF set theory, it is defined as the set whose only element is the empty set. This only odd number in the range of Euler's totient is the largest output possible of the Mobius function, and Egyptian fractions have this number as the numerator. (*) Zero-factorial is equal to this number, as is i to the fourth power. Events which will definitely occur have probability equal to this number, and, like zero, all powers of this number are equal to it. For ten points, give this multiplicative identity, the first positive integer.
answer:

Science