Problem: Computer security:

Today, computer security comprises mainly "preventive" measures, like firewalls or an exit procedure. A firewall can be defined as a way of filtering network data between a host or a network and another network, such as the Internet, and can be implemented as software running on the machine, hooking into the network stack (or, in the case of most UNIX-based operating systems such as Linux, built into the operating system kernel) to provide real time filtering and blocking. Another implementation is a so-called physical firewall which consists of a separate machine filtering network traffic. Firewalls are common amongst machines that are permanently connected to the Internet.

Which part of a Linux computer is the firewall built into?
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A: unanswerable

Problem: Newly electrified lines often show a "sparks effect", whereby electrification in passenger rail systems leads to significant jumps in patronage / revenue. The reasons may include electric trains being seen as more modern and attractive to ride, faster and smoother service, and the fact that electrification often goes hand in hand with a general infrastructure and rolling stock overhaul / replacement, which leads to better service quality (in a way that theoretically could also be achieved by doing similar upgrades yet without electrification). Whatever the causes of the sparks effect, it is well established for numerous routes that have electrified over decades.
How can better service quality be achieved?
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Answer: rolling stock overhaul / replacement

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Music was an important part of both secular and spiritual culture, and in the universities it made up part of the quadrivium of the liberal arts. From the early 13th century, the dominant sacred musical form had been the motet; a composition with text in several parts. From the 1330s and onwards, emerged the polyphonic style, which was a more complex fusion of independent voices. Polyphony had been common in the secular music of the Provencal troubadours. Many of these had fallen victim to the 13th-century Albigensian Crusade, but their influence reached the papal court at Avignon.
Polyphony was common in the secular music of which French region?
A: Provencal

Context and question: According to one of her biographers, Giles St Aubyn, Victoria wrote an average of 2,500 words a day during her adult life. From July 1832 until just before her death, she kept a detailed journal, which eventually encompassed 122 volumes. After Victoria's death, her youngest daughter, Princess Beatrice, was appointed her literary executor. Beatrice transcribed and edited the diaries covering Victoria's accession onwards, and burned the originals in the process. Despite this destruction, much of the diaries still exist. In addition to Beatrice's edited copy, Lord Esher transcribed the volumes from 1832 to 1861 before Beatrice destroyed them. Part of Victoria's extensive correspondence has been published in volumes edited by A. C. Benson, Hector Bolitho, George Earle Buckle, Lord Esher, Roger Fulford, and Richard Hough among others.
How many words a day did Victoria write?
Answer: average of 2,500

Question: A cover story in BusinessWeek magazine claims that economists mostly failed to predict the worst international economic crisis since the Great Depression of the 1930s. The Wharton School of the University of Pennsylvania's online business journal examines why economists failed to predict a major global financial crisis. Popular articles published in the mass media have led the general public to believe that the majority of economists have failed in their obligation to predict the financial crisis. For example, an article in the New York Times informs that economist Nouriel Roubini warned of such crisis as early as September 2006, and the article goes on to state that the profession of economics is bad at predicting recessions. According to The Guardian, Roubini was ridiculed for predicting a collapse of the housing market and worldwide recession, while The New York Times labelled him "Dr. Doom".
Is there an answer to this question: Which economist did the New York Times state warned of a crisis as early as September 2006?

Answer: Nouriel Roubini

Problem: Humanism:

Another instance of ancient humanism as an organised system of thought is found in the Gathas of Zarathustra, composed between 1,000 BCE 600 BCE in Greater Iran. Zarathustra's philosophy in the Gathas lays out a conception of humankind as thinking beings dignified with choice and agency according to the intellect which each receives from Ahura Mazda (God in the form of supreme wisdom). The idea of Ahura Mazda as a non-intervening deistic divine God/Grand Architect of the universe tied with a unique eschatology and ethical system implying that each person is held morally responsible for their choices, made freely in this present life, in the afterlife. The importance placed on thought, action, responsibility, and a non-intervening creator was appealed to by, and inspired a number of, Enlightenment humanist thinkers in Europe such as Voltaire and Montesquieu.

What well know scholar was killed by Humanism?
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A:
unanswerable