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 Q]: opera's third act opens with a shepherd boy singing "Io de' sospiri. " One character in this opera retorts with the aria "Mi dicon venal" when asked what his price is. Another character in this opera sings about how brightly the stars used to shine after he trades his ring to his captor for the chance to write his lover one last letter. That character is killed by a (*) firing squad that he thinks will be shooting blanks after withstanding a session in a torture chamber and refusing to give up the political prisoner Cesare Angelotti. The title character of this opera sings about her good deeds and her dedication to her art in the aria "Vissi d'arte," before she kills the police chief Scarpia and jumps to her death after the execution of the painter Mario Cavardossi. For 10 points, name this Puccini opera about a singer.
[EX A]: Fine Arts

[EX Q]: Late in his life, this man attempted to mediate the Burundian civil war. In 1967, he issued a manifesto prohibiting government ministers from renting out houses and proclaiming "let us pray and heed to the peasant. " He negotiated with Richard Turnbull for independence before issuing the (*) Arusha Declaration and merging his country with a nearby island. For 10 points name this man who promoted ujamaa in Tanzania.
[EX A]: History

[EX Q]: Though it's not glutamate, DARPP-32 is expressed in medium spiny neurons with this molecule's receptors and is phosphorylated by those receptors, thus becoming an inhibitor of protein phosphotase 1. Bupropion blocks reuptake of this and another molecule by binding to this molecule's transporter. That transporter is important in all four of this molecule's major pathways, which include the mesolimbic and the mesocortical. Tuberoinfundibular neurons secrete this neurotransmitter to inhibit Prolactin, which counteracts one of its effects. It is a precursor to other catecholamines like epinephrine and is mainly produced in the substantia nigra. One theory of schizophrenia is that it is related to hyperactive receptors of this compound. For 10 points, name this neurotransmitter which is used to treat Parkinson's disease.
[EX A]:
Science