Problem: Germans:

German philosophers have helped shape western philosophy from as early as the Middle Ages (Albertus Magnus). Later, Leibniz (17th century) and most importantly Kant played central roles in the history of philosophy. Kantianism inspired the work of Schopenhauer and Nietzsche as well as German idealism defended by Fichte and Hegel. Engels helped develop communist theory in the second half of the 19th century while Heidegger and Gadamer pursued the tradition of German philosophy in the 20th century. A number of German intellectuals were also influential in sociology, most notably Adorno, Habermas, Horkheimer, Luhmann, Simmel, Tonnies, and Weber. The University of Berlin founded in 1810 by linguist and philosopher Wilhelm von Humboldt served as an influential model for a number of modern western universities.

What university was founded in the 18th century?
---
A: unanswerable

Problem: Saint Helena:

Saint Helena has the international calling code +290 which, since 2006, Tristan da Cunha shares. Saint Helena telephone numbers changed from 4 to 5 digits on 1 October 2013 by being prefixed with the digit "2", i.e. 2xxxx, with the range 5xxxx being reserved for mobile numbering, and 8xxx being used for Tristan da Cunha numbers (these still shown as 4 digits).

What is the international calling code for Saint Helena?
---
A: +290

Problem: Incandescent light bulb:

Lamps designed for different voltages have different luminous efficacy. For example, a 100-watt, 120-volt lamp will produce about 17.1 lumens per watt. A lamp with the same rated lifetime but designed for 230 V would produce only around 12.8 lumens per watt, and a similar lamp designed for 30 volts (train lighting) would produce as much as 19.8 lumens per watt. Lower voltage lamps have a thicker filament, for the same power rating. They can run hotter for the same lifetime before the filament evaporates.

How many lumens per watt does a typical train light produce?
---
A: as much as 19.8 lumens per watt

Problem: Adult contemporary music:

A more elaborate form of urban AC is the rhythmic oldies format, which focuses primarily on "old school" R&B and soul hits from the 1960s to the 1990s, including Motown and disco hits. The format includes soul or disco artists such as ABBA, The Village People, The Jackson 5, Donna Summer, Tina Charles, Gloria Gaynor and the Bee Gees. Rhythmic oldies stations still exist today, but target African-Americans as opposed to a mass audience.

What radio format is similar to urban AC but features older soul and R&B songs?
---
A:
rhythmic oldies