Problem: Tibet:

Roman Catholic Jesuits and Capuchins arrived from Europe in the 17th and 18th centuries. Portuguese missionaries Jesuit Father Antonio de Andrade and Brother Manuel Marques first reached the kingdom of Gelu in western Tibet in 1624 and was welcomed by the royal family who allowed them to build a church later on. By 1627, there were about a hundred local converts in the Guge kingdom. Later on, Christianity was introduced to Rudok, Ladakh and Tsang and was welcomed by the ruler of the Tsang kingdom, where Andrade and his fellows established a Jesuit outpost at Shigatse in 1626.

When was Christianity introduced to Rudok, Ladakh, and Tsang?
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A: 1626

Problem: The accomplished and awarded writers (poets, novelists, dramatists, nonfiction writers) who have lived in Tucson include Edward Abbey, Erskine Caldwell, Barbara Kingsolver and David Foster Wallace. Some were associated with the University of Arizona, but many were independent writers who chose to make Tucson their home. The city is particularly active in publishing and presenting contemporary innovative poetry in various ways. Examples are the Chax Press, a publisher of poetry books in trade and book arts editions, and the University of Arizona Poetry Center, which has a sizable poetry library and presents readings, conferences, and workshops.
What does the University of Arizona Poetry Center offer?
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Answer: a sizable poetry library and presents readings, conferences, and workshops

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In mathematics, the Persian mathematician Muhammad ibn Musa al-Khwarizmi gave his name to the concept of the algorithm, while the term algebra is derived from al-jabr, the beginning of the title of one of his publications. What is now known as Arabic numerals originally came from India, but Muslim mathematicians did make several refinements to the number system, such as the introduction of decimal point notation. Sabian mathematician Al-Battani (850-929) contributed to astronomy and mathematics, while Persian scholar Al-Razi contributed to chemistry and medicine.
What was Muhammad ibn Musa al-Khwarizmi's profession?
A: mathematician

Context and question: In Ancient Indian philosophy, materialism developed around 600 BC with the works of Ajita Kesakambali, Payasi, Kanada, and the proponents of the Carvaka school of philosophy. Kanada became one of the early proponents of atomism. The NyayaVaisesika school (600 BC - 100 BC) developed one of the earliest forms of atomism, though their proofs of God and their positing that the consciousness was not material precludes labelling them as materialists. Buddhist atomism and the Jaina school continued the atomic tradition.
Around what time did materialism become part of Ancient Indian philosophy?
Answer: 600 BC

Question: The European, American, and Japanese comics traditions have followed different paths. Europeans have seen their tradition as beginning with the Swiss Rodolphe Topffer from as early as 1827 and Americans have seen the origin of theirs in Richard F. Outcault's 1890s newspaper strip The Yellow Kid, though many Americans have come to recognize Topffer's precedence. Japan had a long prehistory of satirical cartoons and comics leading up to the World War II era. The ukiyo-e artist Hokusai popularized the Japanese term for comics and cartooning, manga, in the early 19th century. In the post-war era modern Japanese comics began to flourish when Osamu Tezuka produced a prolific body of work. Towards the close of the 20th century, these three traditions converged in a trend towards book-length comics: the comics album in Europe, the tankobon[a] in Japan, and the graphic novel in the English-speaking countries.
Is there an answer to this question: When did Outcault's The Yellow Kid appear in newspapers?

Answer: 1890s

Problem: Uranium:

Natural uranium consists of three major isotopes: uranium-238 (99.28% natural abundance), uranium-235 (0.71%), and uranium-234 (0.0054%). All three are radioactive, emitting alpha particles, with the exception that all three of these isotopes have small probabilities of undergoing spontaneous fission, rather than alpha emission. There are also five other trace isotopes: uranium-239, which is formed when 238U undergoes spontaneous fission, releasing neutrons that are captured by another 238U atom; uranium-237, which is formed when 238U captures a neutron but emits two more, which then decays to neptunium-237; uranium-233, which is formed in the decay chain of that neptunium-237; and finally, uranium-236 and -240, which appear in the decay chain of primordial plutonium-244. It is also expected that thorium-232 should be able to undergo double beta decay, which would produce uranium-232, but this has not yet been observed experimentally.

What isotope of uranium is formed when 239U experiences spontaneous fission?
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A:
unanswerable