Problem: Alloy:

Although the elements usually must be soluble in the liquid state, they may not always be soluble in the solid state. If the metals remain soluble when solid, the alloy forms a solid solution, becoming a homogeneous structure consisting of identical crystals, called a phase. If the mixture cools and the constituents become insoluble, they may separate to form two or more different types of crystals, creating a heterogeneous microstructure of different phases. However, in other alloys, the insoluble elements may not separate until after crystallization occurs. These alloys are called intermetallic alloys because, if cooled very quickly, they first crystallize as a homogeneous phase, but they are supersaturated with the secondary constituents. As time passes, the atoms of these supersaturated alloys separate within the crystals, forming intermetallic phases that serve to reinforce the crystals internally.

What is the purpose of intermetallic phases?
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A: to reinforce the crystals internally

Problem: Southampton:

Southampton is home to Southampton Football Clubnicknamed "The Saints"who play in the Premier League at St Mary's Stadium, having relocated in 2001 from their 103-year-old former stadium, "The Dell". They reached the top flight of English football (First Division) for the first time in 1966, staying there for eight years. They lifted the FA Cup with a shock victory over Manchester United in 1976, returned to the top flight two years later, and stayed there for 27 years (becoming founder members of the Premier League in 1992) before they were relegated in 2005. The club was promoted back to the Premier League in 2012 following a brief spell in the third-tier and severe financial difficulties. In 2015, "The Saints" finished 7th in the Premier League, their highest league finish in 30 years, after a remarkable season under new manager Ronald Koeman. Their highest league position came in 1984 when they were runners-up in the old First Division. They were also runners-up in the 1979 Football League Cup final and 2003 FA Cup final. Notable former managers include Ted Bates, Lawrie McMenemy, Chris Nicholl, Ian Branfoot and Gordon Strachan. There is a strong rivalry between Portsmouth F.C. ("South Coast derby") which is located only about 30 km (19 mi) away.

What stadium has been home to The Saints since 2001?
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A: St Mary's Stadium

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 entry points are viable for malware and attackers?
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A: unanswerable

Problem: Umayyad Caliphate:

Marwan was succeeded by his son, Abd al-Malik (685705), who reconsolidated Umayyad control of the caliphate. The early reign of Abd al-Malik was marked by the revolt of Al-Mukhtar, which was based in Kufa. Al-Mukhtar hoped to elevate Muhammad ibn al-Hanafiyyah, another son of Ali, to the caliphate, although Ibn al-Hanafiyyah himself may have had no connection to the revolt. The troops of al-Mukhtar engaged in battles both with the Umayyads in 686, defeating them at the river Khazir near Mosul, and with Ibn al-Zubayr in 687, at which time the revolt of al-Mukhtar was crushed. In 691, Umayyad troops reconquered Iraq, and in 692 the same army captured Mecca. Ibn al-Zubayr was killed in the attack.

When did the Umayyads defeat the troops of al-Mukhtar near Mosul?
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A:
unanswerable