Problem: 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 upper house be elected directly or indirectly? 
---
Answer: indirectly


Problem: In 2012, the city contained a total of 594 high-rise buildings, with 8 under construction, 71 planned and 39 at proposal stage making the city's skyline the second largest in Australia. The CBD is dominated by modern office buildings including the Rialto Towers (1986), built on the site of several grand classical Victorian buildings, two of which — the Rialto Building (1889) designed by William Pitt and the Winfield Building (1890) designed by Charles D'Ebro and Richard Speight — still remain today and more recently hi-rise apartment buildings including Eureka Tower (2006), which is listed as the 13th tallest residential building in the world in January 2014.
In what year was the Eureka Tower completed?
---
Answer: 2006


Problem: Niels Bohr introduced the first quantized model of the atom in 1913, in an attempt to overcome a major shortcoming of Rutherford's classical model. In classical electrodynamics, a charge moving in a circle should radiate electromagnetic radiation. If that charge were to be an electron orbiting a nucleus, the radiation would cause it to lose energy and spiral down into the nucleus. Bohr solved this paradox with explicit reference to Planck's work: an electron in a Bohr atom could only have certain defined energies En
Why was the first quantized model of the atom destroyed?
---
Answer:
unanswerable