The problem: Answer a question about this article:
The most accurate timekeeping devices are atomic clocks, which are accurate to seconds in many millions of years, and are used to calibrate other clocks and timekeeping instruments. Atomic clocks use the frequency of electronic transitions in certain atoms to measure the second. One of the most common atoms used is caesium, most modern atomic clocks probe caesium with microwaves to determine the frequency of these electron vibrations. Since 1967, the International System of Measurements bases its unit of time, the second, on the properties of caesium atoms. SI defines the second as 9,192,631,770 cycles of the radiation that corresponds to the transition between two electron spin energy levels of the ground state of the 133Cs atom.
Which system bases its unit of time on the properties of caesium?
****
The answer: the International System of Measurements

The problem: Answer a question about this article:
220th Street is the highest numbered street on Manhattan Island. Marble Hill is also within the borough of Manhattan, so the highest street number in the borough is 228th Street. However, the numbering continues in the Bronx up to 263rd Street. The lowest number is East First Streetwhich runs in Alphabet City near East Houston Streetas well as First Place in Battery Park City.
Where is First Place located?
****
The answer: Battery Park City

The problem: Answer a question about this article:
Eisenhower told District of Columbia officials to make Washington a model for the rest of the country in integrating black and white public school children. He proposed to Congress the Civil Rights Act of 1957 and of 1960 and signed those acts into law. The 1957 act for the first time established a permanent civil rights office inside the Justice Department and a Civil Rights Commission to hear testimony about abuses of voting rights. Although both acts were much weaker than subsequent civil rights legislation, they constituted the first significant civil rights acts since 1875.
Who did Eisenhower tell DC officials to integrate?
****
The answer: school children

The problem: Answer a question about this article:
On October 25, 1989, the Supreme Soviet voted to eliminate special seats for the Communist Party and other official organizations in national and local elections, responding to sharp popular criticism that such reserved slots were undemocratic. After vigorous debate, the 542-member Supreme Soviet passed the measure 254-85 (with 36 abstentions). The decision required a constitutional amendment, ratified by the full congress, which met December 1225. It also passed measures that would allow direct elections for presidents of each of the 15 constituent republics. Gorbachev strongly opposed such a move during debate but was defeated.
Who voted to get rid of the special seats?
****
The answer:
the Supreme Soviet