Problem: Please answer a question about the following article about Uranium:
The discovery and isolation of radium in uranium ore (pitchblende) by Marie Curie sparked the development of uranium mining to extract the radium, which was used to make glow-in-the-dark paints for clock and aircraft dials. This left a prodigious quantity of uranium as a waste product, since it takes three tonnes of uranium to extract one gram of radium. This waste product was diverted to the glazing industry, making uranium glazes very inexpensive and abundant. Besides the pottery glazes, uranium tile glazes accounted for the bulk of the use, including common bathroom and kitchen tiles which can be produced in green, yellow, mauve, black, blue, red and other colors.
Who isolated radium in uranium ore?
A: Marie Curie
Problem: Please answer a question about the following article about New Haven, Connecticut:
In 1970, the New Haven Black Panther trials took place, the largest and longest trials in Connecticut history. Black Panther Party co-founder Bobby Seale and ten other Party members were tried for murdering an alleged informant. Beginning on May Day, the city became a center of protest for 12,000 Panther supporters, college students, and New Left activists (including Jean Genet, Benjamin Spock, Abbie Hoffman, Jerry Rubin, and John Froines), who amassed on the New Haven Green, across the street from where the trials were being held. Violent confrontations between the demonstrators and the New Haven police occurred, and several bombs were set off in the area by radicals. The event became a rallying point for the New Left and critics of the Nixon Administration.
What day marked the beginning of New Haven being overwhelmed by 12,000 individuals protesting the Black Panther trials? 
A: May Day
Problem: Please answer a question about the following article about Federalism:
Alternatively, or in addition to this practice, the members of an upper house may be indirectly elected by the government or legislature of the component states, as occurred in the United States prior to 1913, or be actual members or delegates of the state governments, as, for example, is the case in the German Bundesrat and in the Council of the European Union. The lower house of a federal legislature is usually directly elected, with apportionment in proportion to population, although states may sometimes still be guaranteed a certain minimum number of seats.
Can the members of the lower house be elected directly or indirectly? 
A: directly
Problem: Please answer a question about the following article about Detroit:
Detroit, like many places in the United States, developed racial conflict and discrimination in the 20th century following rapid demographic changes as hundreds of thousands of new workers were attracted to the industrial city; in a short period it became the 4th-largest city in the nation. The Great Migration brought rural blacks from the South; they were outnumbered by southern whites who also migrated to the city. Immigration brought southern and eastern Europeans of Catholic and Jewish faith; these new groups competed with native-born whites for jobs and housing in the booming city. Detroit was one of the major Midwest cities that was a site for the dramatic urban revival of the Ku Klux Klan beginning in 1915. "By the 1920s the city had become a stronghold of the KKK," whose members opposed Catholic and Jewish immigrants, as well as black Americans. The Black Legion, a secret vigilante group, was active in the Detroit area in the 1930s, when one-third of its estimated 20,000 to 30,000 members in Michigan were based in the city. It was defeated after numerous prosecutions following the kidnapping and murder in 1936 of Charles Poole, a Catholic Works Progress Administration organizer. A total of 49 men of the Black Legion were convicted of numerous crimes, with many sentenced to life in prison for murder.
What was the name of a vigilante group in Detroit?
A:
The Black Legion