Problem: Department store:

In New York City in 1846, Alexander Turney Stewart established the "Marble Palace" on Broadway, between Chambers and Reade streets. He offered European retail merchandise at fixed prices on a variety of dry goods, and advertised a policy of providing "free entrance" to all potential customers. Though it was clad in white marble to look like a Renaissance palazzo, the building's cast iron construction permitted large plate glass windows that permitted major seasonal displays, especially in the Christmas shopping season. In 1862, Stewart built a new store on a full city block with eight floors and nineteen departments of dress goods and furnishing materials, carpets, glass and china, toys and sports equipment, ranged around a central glass-covered court. His innovations included buying from manufacturers for cash and in large quantities, keeping his markup small and prices low, truthful presentation of merchandise, the one-price policy (so there was no haggling), simple merchandise returns and cash refund policy, selling for cash and not credit, buyers who searched worldwide for quality merchandise, departmentalization, vertical and horizontal integration, volume sales, and free services for customers such as waiting rooms and free delivery of purchases. His innovations were quickly copied by other department stores.

What customer services didn't the Marble Palace offer?
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A: unanswerable

Problem: Corey Clark was disqualified during the finals for having an undisclosed police record; however, he later alleged that he and Paula Abdul had an affair while on the show and that this contributed to his expulsion. Clark also claimed that Abdul gave him preferential treatment on the show due to their affair. The allegations were dismissed by Fox after an independent investigation. Two semi-finalists were also disqualified that year Jaered Andrews for an arrest on an assault charge, and Frenchie Davis for having previously modelled for an adult website.
Which contestant was removed from the competition for not revealing his police record?
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Answer: Corey Clark

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Modern electrification systems take AC energy from a power grid which is delivered to a locomotive and converted to a DC voltage to be used by traction motors. These motors may either be DC motors which directly use the DC or they may be 3-phase AC motors which require further conversion of the DC to 3-phase AC (using power electronics). Thus both systems are faced with the same task: converting and transporting high-voltage AC from the power grid to low-voltage DC in the locomotive. Where should this conversion take place and at what voltage and current (AC or DC) should the power flow to the locomotive? And how does all this relate to energy-efficiency? Both the transmission and conversion of electric energy involve losses: ohmic losses in wires and power electronics, magnetic field losses in transformers and smoothing reactors (inductors). Power conversion for a DC system takes place mainly in a railway substation where large, heavy, and more efficient hardware can be used as compared to an AC system where conversion takes place aboard the locomotive where space is limited and losses are significantly higher. Also, the energy used to blow air to cool transformers, power electronics (including rectifiers), and other conversion hardware must be accounted for.
What is the main action AC and DC systems have to deal with?
A: converting and transporting

Context and question: In 1913, his father was elevated to the nobility for his service to the Austro-Hungarian Empire by Emperor Franz Joseph. The Neumann family thus acquired the hereditary appellation Margittai, meaning of Marghita. The family had no connection with the town; the appellation was chosen in reference to Margaret, as was those chosen coat of arms depicting three marguerites. Neumann Janos became Margittai Neumann Janos (John Neumann of Marghita), which he later changed to the German Johann von Neumann.
What Emperor elevated Von Neumann's father to nobility?
Answer: Emperor Franz Joseph

Question: The Suez Canal is an artificial sea-level waterway in Egypt considered the most important centre of the maritime transport in the Middle East, connecting the Mediterranean Sea and the Red Sea. Opened in November 1869 after 10 years of construction work, it allows ship transport between Europe and Asia without navigation around Africa. The northern terminus is Port Said and the southern terminus is Port Tawfiq at the city of Suez. Ismailia lies on its west bank, 3 km (1.9 mi) from the half-way point.
Is there an answer to this question: What is consideredt the most important part of maritime transport in middle east?

Answer: The Suez Canal

Old English contained a certain number of loanwords from Latin, which was the scholarly and diplomatic lingua franca of Western Europe. It is sometimes possible to give approximate dates for the borrowing of individual Latin words based on which patterns of sound change they have undergone. Some Latin words had already been borrowed into the Germanic languages before the ancestral Angles and Saxons left continental Europe for Britain. More entered the language when the Anglo-Saxons were converted to Christianity and Latin-speaking priests became influential. It was also through Irish Christian missionaries that the Latin alphabet was introduced and adapted for the writing of Old English, replacing the earlier runic system. Nonetheless, the largest transfer of Latin-based (mainly Old French) words into English occurred after the Norman Conquest of 1066, and thus in the Middle English rather than the Old English period.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What individuals introduced the Latin alphabet to the speakers of Old English?
Ah, so..
Irish Christian missionaries