Input: Read this: Depending on a number of considerations, a company may apply for and be granted a patent for the drug, or the process of producing the drug, granting exclusivity rights typically for about 20 years. However, only after rigorous study and testing, which takes 10 to 15 years on average, will governmental authorities grant permission for the company to market and sell the drug. Patent protection enables the owner of the patent to recover the costs of research and development through high profit margins for the branded drug. When the patent protection for the drug expires, a generic drug is usually developed and sold by a competing company. The development and approval of generics is less expensive, allowing them to be sold at a lower price. Often the owner of the branded drug will introduce a generic version before the patent expires in order to get a head start in the generic market. Restructuring has therefore become routine, driven by the patent expiration of products launched during the industry's "golden era" in the 1990s and companies' failure to develop sufficient new blockbuster products to replace lost revenues.
Question: What decade was the pharmaceutical industry's "drug era"?

Output: unanswerable

QUES: Humans have shown extreme inventiveness in devising clothing solutions to environmental hazards. Examples include: space suits, air conditioned clothing, armor, diving suits, swimsuits, bee-keeper gear, motorcycle leathers, high-visibility clothing, and other pieces of protective clothing. Meanwhile, the distinction between clothing and protective equipment is not always clear-cutsince clothes designed to be fashionable often have protective value and clothes designed for function often consider fashion in their design. Wearing clothes also has social implications. They cover parts of the body that social norms require to be covered, act as a form of adornment, and serve other social purposes.

What does not have social implications
What is the answer?
ANS: unanswerable

QUES: According to the United States Census Bureau, the city has a total area of 28.70 square miles (74.33 km2), of which, 27.83 square miles (72.08 km2) of it is land and 0.87 square miles (2.25 km2) is water, much of which is part of the Huron River. Ann Arbor is about 35 miles (56 km) west of Detroit. Ann Arbor Charter Township adjoins the city's north and east sides. Ann Arbor is situated on the Huron River in a productive agricultural and fruit-growing region. The landscape of Ann Arbor consists of hills and valleys, with the terrain becoming steeper near the Huron River. The elevation ranges from about 750 feet (230 m) along the Huron River to 1,015 feet (309 m) on the city's west side, near the intersection of Maple Road and Pauline Blvd. Generally, the west-central and northwestern parts of the city and U-M's North Campus are the highest parts of the city; the lowest parts are along the Huron River and in the southeast. Ann Arbor Municipal Airport, which is south of the city at 4213.38N 8344.74W / 42.22300N 83.74567W / 42.22300; -83.74567, has an elevation of 839 feet (256 m).
Ann Arbor is 56 miles west of what Michigan city?

ANS: unanswerable

As cellular metabolism/energy production requires oxygen, potentially damaging (e.g., mutation causing) compounds known as free radicals can form. Most of these are oxidizers (i.e., acceptors of electrons) and some react very strongly. For the continued normal cellular maintenance, growth, and division, these free radicals must be sufficiently neutralized by antioxidant compounds. Recently, some researchers suggested an interesting theory of evolution of dietary antioxidants. Some are produced by the human body with adequate precursors (glutathione, Vitamin C), and those the body cannot produce may only be obtained in the diet via direct sources (Vitamin C in humans, Vitamin A, Vitamin K) or produced by the body from other compounds (Beta-carotene converted to Vitamin A by the body, Vitamin D synthesized from cholesterol by sunlight). Phytochemicals (Section Below) and their subgroup, polyphenols, make up the majority of antioxidants; about 4,000 are known. Different antioxidants are now known to function in a cooperative network. For example, Vitamin C can reactivate free radical-containing glutathione or Vitamin E by accepting the free radical itself. Some antioxidants are more effective than others at neutralizing different free radicals. Some cannot neutralize certain free radicals. Some cannot be present in certain areas of free radical development (Vitamin A is fat-soluble and protects fat areas, Vitamin C is water-soluble and protects those areas). When interacting with a free radical, some antioxidants produce a different free radical compound that is less dangerous or more dangerous than the previous compound. Having a variety of antioxidants allows any byproducts to be safely dealt with by more efficient antioxidants in neutralizing a free radical's butterfly effect.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is another term that can be used to describe "potentially damaging" compounds?
Ah, so.. mutation causing

Question: At the turn of the 21st century, a post-punk revival developed in British and American alternative and indie rock, which soon started appearing in other countries, as well. The earliest sign of a revival was the emergence of various underground bands in the mid-'90s. However, the first commercially successful bands the Strokes, Franz Ferdinand, Interpol, Neils Children and Editors surfaced in the late 1990s to early 2000s, as did several dance-oriented bands such as the Rapture, Radio 4 and LCD Soundsystem. Additionally, some darker post-punk bands began to appear in the indie music scene in the 2010s, including Cold Cave, She Wants Revenge, Eagulls, the Soft Moon, She Past Away and Light Asylum, who were also affiliated with the darkwave revival, as well as A Place to Bury Strangers, who combined early post-punk and shoegaze. These bands tend to draw a fanbase who are a combination of the indie music subculture, older post-punk fans and the current goth subculture. In the 2010s, Savages played a music reminiscent of early British post-punk bands of the late '70s.
Try to answer this question if possible: What early sign heralded the post-punk revival?
Answer: emergence of various underground bands

Question: In addition, intermediaries are now also generally understood to include Internet portals, software and games providers, those providing virtual information such as interactive forums and comment facilities with or without a moderation system, aggregators of various kinds, such as news aggregators, universities, libraries and archives, web search engines, chat rooms, web blogs, mailing lists, and any website which provides access to third party content through, for example, hyperlinks, a crucial element of the World Wide Web.
Try to answer this question if possible: What is an unimportant element of the World Wide Web?
Answer:
unanswerable