Problem: Paris:

During the Middle Ages, Paris was a center of Jewish learning with famous Talmudic scholars, such as Yechiel of Paris who took part in the Disputation of Paris between Christian and Jewish intellectuals. The Parisian Jewish community was victim of persecution, alternating expulsions and returns, until France became the first country in Europe to emancipate its Jewish population during the French Revolution. Although 75% of the Jewish population in France survived the Holocaust during World War II, half the city's Jewish population perished in Nazi concentration camps, while some others fled abroad. A large migration of North Africa Sephardic Jews settled Paris in the 1960s, and represent most of the Paris Jewish community today. There are currently 83 synagogues in the city; The Marais-quarter Agoudas Hakehilos Synagogue, built in 1913 by architect Hector Guimard, is a Paris landmark.

What percentage of France's Jewish population survived the holocaust?
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A: 75

Problem: The lyrics of the modern Japanese national anthem, Kimi ga Yo, were written in the Heian period, as was The Tale of Genji by Murasaki Shikibu, one of the first novels ever written. Murasaki Shikibu's contemporary and rival Sei Shonagon's revealing observations and musings as an attendant in the Empress' court were recorded collectively as The Pillow Book in the 990s, which revealed the quotidian capital lifestyle. The Heian period produced a flowering of poetry including works of Ariwara no Narihira, Ono no Komachi, Izumi Shikibu, Murasaki Shikibu, Saigyo and Fujiwara no Teika. The famous Japanese poem known as the Iroha (), of uncertain authorship, was also written during the Heian period.
What famous poem with an unknown author was written during the Heian period?
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Answer: Iroha

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In 1983, the Church issued a new code of canon law. Unlike its predecessor, the 1983 Code of Canon Law did not explicitly name Masonic orders among the secret societies it condemns. It states: "A person who joins an association which plots against the Church is to be punished with a just penalty; one who promotes or takes office in such an association is to be punished with an interdict." This named omission of Masonic orders caused both Catholics and Freemasons to believe that the ban on Catholics becoming Freemasons may have been lifted, especially after the perceived liberalisation of Vatican II. However, the matter was clarified when Cardinal Joseph Ratzinger (later Pope Benedict XVI), as the Prefect of the Congregation for the Doctrine of the Faith, issued a Declaration on Masonic Associations, which states: "... the Church's negative judgment in regard to Masonic association remains unchanged since their principles have always been considered irreconcilable with the doctrine of the Church and therefore membership in them remains forbidden. The faithful who enroll in Masonic associations are in a state of grave sin and may not receive Holy Communion." For its part, Freemasonry has never objected to Catholics joining their fraternity. Those Grand Lodges in amity with UGLE deny the Church's claims. The UGLE now states that "Freemasonry does not seek to replace a Mason's religion or provide a substitute for it."
Who clarified the new code of Canon law of 1973?
A: unanswerable

Context and question: The Times is a British daily national newspaper based in London. It began in 1785 under the title The Daily Universal Register and became The Times on 1 January 1788. The Times and its sister paper The Sunday Times (founded in 1821) are published by Times Newspapers, since 1981 a subsidiary of News UK, itself wholly owned by the News Corp group headed by Rupert Murdoch. The Times and The Sunday Times do not share editorial staff, were founded independently and have only had common ownership since 1967.
The Times, owned by News UK, is itself owned by what major corporation?
Answer: News Corp group

Question: The agglomeration of Kathmandu has not yet been officially defined. The urban area of the Kathmandu valley is split among three different districts (collections of local government units within a zone) which extend very little beyond the valley fringe, except towards the southern ranges, which have comparatively small population. They have the three highest population densities in the country. Within the districts lie VDCs (villages), 3 municipalities (Bhaktapur, Kirtipur, Madhyapur Thimi), 1 sub-metropolitan city (Lalitpur), and 1 metropolitan city (Kathmandu). Some district subdivisions remain legally villages yet are densely populated, Gonggabu VDC notably recorded a density over 20,000 people/km2. (2011 census). The following data table describes the districts considered part of the agglomeration:
Is there an answer to this question: How many districts make up the Kathmandu Valley urban area?

Answer: three

QUES: In the context of relativity, mass is not an additive quantity, in the sense that one can add the rest masses of particles in a system to get the total rest mass of the system. Thus, in relativity usually a more general view is that it is not the sum of rest masses, but the energymomentum tensor that quantifies the amount of matter. This tensor gives the rest mass for the entire system. "Matter" therefore is sometimes considered as anything that contributes to the energymomentum of a system, that is, anything that is not purely gravity. This view is commonly held in fields that deal with general relativity such as cosmology. In this view, light and other massless particles and fields are part of matter.

What can the energy-momentum tensor not do?
What is the answer?
ANS:
unanswerable