Problem: Intellectual property:

Trademark infringement occurs when one party uses a trademark that is identical or confusingly similar to a trademark owned by another party, in relation to products or services which are identical or similar to the products or services of the other party. In many countries, a trademark receives protection without registration, but registering a trademark provides legal advantages for enforcement. Infringement can be addressed by civil litigation and, in several jurisdictions, under criminal law.

A trademark without what receives the same legal advantages as a registered trademark?
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A: unanswerable

Problem: As with the minerals discussed above, some vitamins are recognized as organic essential nutrients, necessary in the diet for good health. (Vitamin D is the exception: it can be synthesized in the skin, in the presence of UVB radiation.) Certain vitamin-like compounds that are recommended in the diet, such as carnitine, are thought useful for survival and health, but these are not "essential" dietary nutrients because the human body has some capacity to produce them from other compounds. Moreover, thousands of different phytochemicals have recently been discovered in food (particularly in fresh vegetables), which may have desirable properties including antioxidant activity (see below); however, experimental demonstration has been suggestive but inconclusive. Other essential nutrients that are not classified as vitamins include essential amino acids (see above), choline, essential fatty acids (see above), and the minerals discussed in the preceding section.
Which vitamin can be synthesized in the skin?
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Answer: Vitamin D

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Others have pointed out that there were not enough of these loans made to cause a crisis of this magnitude. In an article in Portfolio Magazine, Michael Lewis spoke with one trader who noted that "There weren't enough Americans with [bad] credit taking out [bad loans] to satisfy investors' appetite for the end product." Essentially, investment banks and hedge funds used financial innovation to enable large wagers to be made, far beyond the actual value of the underlying mortgage loans, using derivatives called credit default swaps, collateralized debt obligations and synthetic CDOs.
What are some names of derivatives?
A: credit default swaps, collateralized debt obligations and synthetic CDOs

Context and question: The early history of Portugal is shared with the rest of the Iberian Peninsula located in South Western Europe. The name of Portugal derives from the joined Romano-Celtic name Portus Cale. The region was settled by Pre-Celts and Celts, giving origin to peoples like the Gallaeci, Lusitanians, Celtici and Cynetes, visited by Phoenicians and Carthaginians, incorporated in the Roman Republic dominions as Lusitania and part of Gallaecia, after 45 BC until 298 AD, settled again by Suebi, Buri, and Visigoths, and conquered by Moors. Other influences include some 5th-century vestiges of Alan settlement, which were found in Alenquer (old Germanic Alankerk, from Alan+kerk; meaning church of the Alan (people), Coimbra and Lisbon.
To what four peoples did the settlement of Portugal give rise?
Answer: Gallaeci, Lusitanians, Celtici and Cynetes

Question: The CD was planned to be the successor of the gramophone record for playing music, rather than primarily as a data storage medium. From its origins as a musical format, CDs have grown to encompass other applications. In 1983, following the CD's introduction, Immink and Braat presented the first experiments with erasable compact discs during the 73rd AES Convention. In June 1985, the computer-readable CD-ROM (read-only memory) and, in 1990, CD-Recordable were introduced, also developed by both Sony and Philips. Recordable CDs were a new alternative to tape for recording music and copying music albums without defects introduced in compression used in other digital recording methods. Other newer video formats such as DVD and Blu-ray use the same physical geometry as CD, and most DVD and Blu-ray players are backward compatible with audio CD.
Is there an answer to this question: What year was the 73rd AES Convention?

Answer: 1983

Problem: Marvel Comics:

In 1968, while selling 50 million comic books a year, company founder Goodman revised the constraining distribution arrangement with Independent News he had reached under duress during the Atlas years, allowing him now to release as many titles as demand warranted. Late that year he sold Marvel Comics and his other publishing businesses to the Perfect Film and Chemical Corporation, which continued to group them as the subsidiary Magazine Management Company, with Goodman remaining as publisher. In 1969, Goodman finally ended his distribution deal with Independent by signing with Curtis Circulation Company.

What company was distributing Marvel's titles at that point?
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A:
Independent News