Problem: Department store:

Selfridges was established in 1909 by American-born Harry Gordon Selfridge on Oxford Street. The company's innovative marketing promoted the radical notion of shopping for pleasure rather than necessity and its techniques were adopted by modern department stores the world over. The store was extensively promoted through paid advertising. The shop floors were structured so that goods could be made more accessible to customers. There were elegant restaurants with modest prices, a library, reading and writing rooms, special reception rooms for French, German, American and "Colonial" customers, a First Aid Room, and a Silence Room, with soft lights, deep chairs, and double-glazing, all intended to keep customers in the store as long as possible. Staff members were taught to be on hand to assist customers, but not too aggressively, and to sell the merchandise. Selfridge attracted shoppers with educational and scientific exhibits; – in 1909, Louis Blériot's monoplane was exhibited at Selfridges (Blériot was the first to fly over the English Channel), and the first public demonstration of television by John Logie Baird took place in the department store in 1925.

What sort of customers did Selfridges most often cater to?
---
A: shoppers with educational and scientific exhibits


Problem: In 1884, pro-Japanese Koreans in Seoul led the Gapsin Coup. Tensions between China and Japan rose after China intervened to suppress the uprising. Japanese Prime Minister Itō Hirobumi and Li Hongzhang signed the Convention of Tientsin, an agreement to withdraw troops simultaneously, but the First Sino-Japanese War of 1895 was a military humiliation. The Treaty of Shimonoseki recognized Korean independence and ceded Taiwan and the Pescadores to Japan. The terms might have been harsher, but when Japanese citizen attacked and wounded Li Hongzhang, an international outcry shamed the Japanese into revising them. The original agreement stipulated the cession of Liaodong Peninsula to Japan, but Russia, with its own designs on the territory, along with Germany and France, in what was known as the Triple Intervention, successfully put pressure on the Japanese to abandon the peninsula.
Who signed the Convention of Tientsin?
---
Answer: Itō Hirobumi and Li Hongzhang


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Lasers emitting in the green part of the spectrum are widely available to the general public in a wide range of output powers. Green laser pointers outputting at 532 nm (563.5 THz) are relatively inexpensive compared to other wavelengths of the same power, and are very popular due to their good beam quality and very high apparent brightness. The most common green lasers use diode pumped solid state (DPSS) technology to create the green light. An infrared laser diode at 808 nm is used to pump a crystal of neodymium-doped yttrium vanadium oxide (Nd:YVO4) or neodymium-doped yttrium aluminium garnet (Nd:YAG) and induces it to emit 281.76 THz (1064 nm). This deeper infrared light is then passed through another crystal containing potassium, titanium and phosphorus (KTP), whose non-linear properties generate light at a frequency that is twice that of the incident beam (563.5 THz); in this case corresponding to the wavelength of 532 nm ("green"). Other green wavelengths are also available using DPSS technology ranging from 501 nm to 543 nm. Green wavelengths are also available from gas lasers, including the helium–neon laser (543 nm), the Argon-ion laser (514 nm) and the Krypton-ion laser (521 nm and 531 nm), as well as liquid dye lasers. Green lasers have a wide variety of applications, including pointing, illumination, surgery, laser light shows, spectroscopy, interferometry, fluorescence, holography, machine vision, non-lethal weapons and bird control.
What is the range of green wavelengths available when using DPSS technology?
A: 501 nm to 543 nm


Context and question: This was a significant step towards restoring communion between Rome and Constantinople. It produced the Catholic-Orthodox Joint declaration of 1965, which was read out on 7 December 1965, simultaneously at a public meeting of the Second Vatican Council in Rome and at a special ceremony in Istanbul. The declaration did not end the schism, but showed a desire for greater reconciliation between the two churches. In May 1973, the Coptic Patriarch Shenouda III of Alexandria visited the Vatican, where he met three times with Pope Paul VI. A common declaration and a joint Creed issued after the visit demonstrated that there are virtually no more[additional citation needed] theological discrepancies between the Coptic and Roman Catholic Churches.
Who visited the Vatican in May of 1973 in an effort to negotiate Orthodox and Catholic relations?
Answer: Coptic Patriarch Shenouda III


Question: At the University of Vienna, Hayek earned doctorates in law and political science in 1921 and 1923 respectively; and he also studied philosophy, psychology, and economics. For a short time, when the University of Vienna closed, Hayek studied in Constantin von Monakow's Institute of Brain Anatomy, where Hayek spent much of his time staining brain cells. Hayek's time in Monakow's lab, and his deep interest in the work of Ernst Mach, inspired Hayek's first intellectual project, eventually published as The Sensory Order (1952). It located connective learning at the physical and neurological levels, rejecting the "sense data" associationism of the empiricists and logical positivists. Hayek presented his work to the private seminar he had created with Herbert Furth called the Geistkreis.
Is there an answer to this question: What was the name of Hayek's first work?

Answer: The Sensory Order


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The graphic novel—book-length comics—began to gain attention after Will Eisner popularized the term with his book A Contract with God (1978). The term became widely known with the public after the commercial success of Maus, Watchmen, and The Dark Knight Returns in the mid-1980s. In the 21st century graphic novels became established in mainstream bookstores and libraries and webcomics became common.
What decade did the term "graphic novel" become well known by the public?
A:
1980s