Problem: Film speed:

The DIN system, officially DIN standard 4512 by Deutsches Institut fur Normung (but still named Deutscher Normenausschu (DNA) at this time), was published in January 1934. It grew out of drafts for a standardized method of sensitometry put forward by Deutscher Normenausschu fur Phototechnik as proposed by the committee for sensitometry of the Deutsche Gesellschaft fur photographische Forschung since 1930 and presented by Robert Luther (de) (18681945) and Emanuel Goldberg (18811970) at the influential VIII. International Congress of Photography (German: Internationaler Kongre fur wissenschaftliche und angewandte Photographie) held in Dresden from August 3 to 8, 1931.

Where was the VIII International Congress of Photography held?
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A: Dresden

Problem: Republic of the Congo:

The capital, Brazzaville, is located on the Congo River, in the south of the country, immediately across from Kinshasa, the capital of the Democratic Republic of the Congo.

What city is located far away from Brazzaville?
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A: unanswerable

Problem: Madrasa:

In Southeast Asia, Muslim students have a choice of attending a secular government or an Islamic school. Madaris or Islamic schools are known as Sekolah Agama (Malay: religious school) in Malaysia and Indonesia, (Thai: school of Islam) in Thailand and madaris in the Philippines. In countries where Islam is not the majority or state religion, Islamic schools are found in regions such as southern Thailand (near the Thai-Malaysian border) and the southern Philippines in Mindanao, where a significant Muslim population can be found.

What are madaris referred to as outside of Indonesia and Malaysia?
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A: unanswerable

Problem: Time:

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.

What method do atomic clocks use to measure cycles?
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A:
unanswerable