Problem: Computer security:

If access is gained to a car's internal controller area network, it is possible to disable the brakes and turn the steering wheel. Computerized engine timing, cruise control, anti-lock brakes, seat belt tensioners, door locks, airbags and advanced driver assistance systems make these disruptions possible, and self-driving cars go even further. Connected cars may use wifi and bluetooth to communicate with onboard consumer devices, and the cell phone network to contact concierge and emergency assistance services or get navigational or entertainment information; each of these networks is a potential entry point for malware or an attacker. Researchers in 2011 were even able to use a malicious compact disc in a car's stereo system as a successful attack vector, and cars with built-in voice recognition or remote assistance features have onboard microphones which could be used for eavesdropping.

What were researchers in 2011 able to use as a successful attack vector?
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A: a malicious compact disc in a car's stereo system


Problem: An influx of interstate and overseas migrants, particularly Irish, German and Chinese, saw the development of slums including a temporary "tent city" established on the southern banks of the Yarra. Chinese migrants founded the Melbourne Chinatown in 1851, which remains the longest continuous Chinese settlement in the Western World. In the aftermath of the Eureka Stockade, mass public support for the plight of the miners resulted in major political changes to the colony, including changes to working conditions across local industries including mining, agriculture and manufacturing. The nationalities involved in the Eureka revolt and Burke and Wills expedition gave an indication of immigration flows in the second half of the nineteenth century.
What term is given to the slums established on the souther banks of the Yarra?
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Answer: tent city


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In the late 1960s, the term heavy metal was used interchangeably with hard rock, but gradually began to be used to describe music played with even more volume and intensity. While hard rock maintained a bluesy rock and roll identity, including some swing in the back beat and riffs that tended to outline chord progressions in their hooks, heavy metal's riffs often functioned as stand-alone melodies and had no swing in them. Heavy metal took on "darker" characteristics after Black Sabbath's breakthrough at the beginning of the 1970s. In the 1980s it developed a number of subgenres, often termed extreme metal, some of which were influenced by hardcore punk, and which further differentiated the two styles. Despite this differentiation, hard rock and heavy metal have existed side by side, with bands frequently standing on the boundary of, or crossing between, the genres.
Which term was never used interchangeably with hard rock?
A: unanswerable


Context and question: Machine vision systems often require bright and homogeneous illumination, so features of interest are easier to process. LEDs are often used for this purpose, and this is likely to remain one of their major uses until the price drops low enough to make signaling and illumination uses more widespread. Barcode scanners are the most common example of machine vision, and many low cost products use red LEDs instead of lasers. Optical computer mice are an example of LEDs in machine vision, as it is used to provide an even light source on the surface for the miniature camera within the mouse. LEDs constitute a nearly ideal light source for machine vision systems for several reasons:
LEDs are often used for what type of systems?
Answer: Machine vision


Question: In 1999, Estonia experienced its worst year economically since it regained independence in 1991, largely because of the impact of the 1998 Russian financial crisis.[citation needed] Estonia joined the WTO in November 1999. With assistance from the European Union, the World Bank and the Nordic Investment Bank, Estonia completed most of its preparations for European Union membership by the end of 2002 and now has one of the strongest economies of the new member states of the European Union.[citation needed] Estonia joined the OECD in 2010.
Is there an answer to this question: What was the worst economic year for Estonia after winning independence?

Answer: 1999


Question: With successive Persian rule, the region, divided between Syria-Coele province and later the autonomous Yehud Medinata, was gradually developing back into urban society, largely dominated by Judeans. The Greek conquests largely skipped the region without any resistance or interest. Incorporated into Ptolemaic and finally Seleucid Empires, the southern Levant was heavily hellenized, building the tensions between Judeans and Greeks. The conflict erupted in 167 BCE with the Maccabean Revolt, which succeeded in establishing an independent Hasmonean Kingdom in Judah, which later expanded over much of modern Israel, as the Seleucids gradually lost control in the region.
Is there an answer to this question: Who dominated the society?

Answer:
Judeans