Input: Read this: The black-body problem was revisited in 1905, when Rayleigh and Jeans (on the one hand) and Einstein (on the other hand) independently proved that classical electromagnetism could never account for the observed spectrum. These proofs are commonly known as the "ultraviolet catastrophe", a name coined by Paul Ehrenfest in 1911. They contributed greatly (along with Einstein's work on the photoelectric effect) to convincing physicists that Planck's postulate of quantized energy levels was more than a mere mathematical formalism. The very first Solvay Conference in 1911 was devoted to "the theory of radiation and quanta". Max Planck received the 1918 Nobel Prize in Physics "in recognition of the services he rendered to the advancement of Physics by his discovery of energy quanta".
Question: When was the last Solvay Conference held?

Output: unanswerable

Input: Read this: Rajasthan is known for its traditional, colorful art. The block prints, tie and dye prints, Bagaru prints, Sanganer prints, and Zari embroidery are major export products from Rajasthan. Handicraft items like wooden furniture and crafts, carpets, and blue pottery are commonly found here. Shopping reflects the colorful culture, Rajasthani clothes have a lot of mirror work and embroidery. A Rajasthani traditional dress for females comprises an ankle-length skirt and a short top, also known as a lehenga or a chaniya choli. A piece of cloth is used to cover the head, both for protection from heat and maintenance of modesty. Rajasthani dresses are usually designed in bright colors like blue, yellow and orange.
Question: What are the names for a traditional female short-top piece of clothing?

Output: lehenga or a chaniya choli

Input: Read this: During the 19th century, it was not infrequent for the Foreign Office to approach The Times and ask for continental intelligence, which was often superior to that conveyed by official sources.[citation needed]
Question: Which century was The Times first often relied upon for continental intelligence?

Output: 19th century

Input: Read this: The first satellite of the second-generation system, Compass-M1 was launched in 2007. It was followed by further nine satellites during 2009-2011, achieving functional regional coverage. A total of 16 satellites were launched during this phase.
Question: How many satellites were launched between 2005 and 2007?

Output:
unanswerable