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.

How are exit procedures implemented?
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A: unanswerable


Problem: At her Silver Jubilee in 1977, the crowds and celebrations were genuinely enthusiastic, but in the 1980s, public criticism of the royal family increased, as the personal and working lives of Elizabeth's children came under media scrutiny. Elizabeth's popularity sank to a low point in the 1990s. Under pressure from public opinion, she began to pay income tax for the first time, and Buckingham Palace was opened to the public. Discontent with the monarchy reached its peak on the death of Diana, Princess of Wales, though Elizabeth's personal popularity and support for the monarchy rebounded after her live television broadcast to the world five days after Diana's death.
What did Elizabeth start paying in the 1990 s?
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Answer: income tax


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Four separate and distinct state universities are located in Houston. The University of Houston is a nationally recognized Tier One research university, and is the flagship institution of the University of Houston System. The third-largest university in Texas, the University of Houston has nearly 40,000 students on its 667-acre campus in southeast Houston. The University of Houston–Clear Lake and the University of Houston–Downtown are stand-alone universities; they are not branch campuses of the University of Houston. Located in the historic community of Third Ward is Texas Southern University, one of the largest historically black colleges and universities in the United States.
What kind of college is Texas Southern University?
A: largest historically black


Context and question: Somali scholars have for centuries produced many notable examples of Islamic literature ranging from poetry to Hadith. With the adoption of the Latin alphabet in 1972 to transcribe the Somali language, numerous contemporary Somali authors have also released novels, some of which have gone on to receive worldwide acclaim. Of these modern writers, Nuruddin Farah is probably the most celebrated. Books such as From a Crooked Rib and Links are considered important literary achievements, works which have earned Farah, among other accolades, the 1998 Neustadt International Prize for Literature. Farah Mohamed Jama Awl is another prominent Somali writer who is perhaps best known for his Dervish era novel, Ignorance is the enemy of love. Young upstart Nadifa Mohamed was also awarded the 2010 Betty Trask Prize. Additionally, Mohamed Ibrahim Warsame 'Hadrawi' is considered by many to be the greatest living Somali poet, and several of his works have been translated internationally.
When did Somalis begin to render their language using the Latin alphabet?
Answer: 1972


Question: St. Patrick's Street, the main street of the city which was remodelled in the mid-2000s, is known for the architecture of the buildings along its pedestrian-friendly route and is the main shopping thoroughfare. The reason for its curved shape is that it originally was a channel of the River Lee that was built over on arches. The General Post Office, with its limestone façade, is on Oliver Plunkett Street, on the site of the Theatre Royal which was built in 1760 and burned down in 1840. The English circus proprietor Pablo Fanque rebuilt an amphitheatre on the spot in 1850, which was subsequently transformed into a theatre and then into the present General Post Office in 1877.  The Grand Parade is a tree-lined avenue, home to offices, shops and financial institutions. The old financial centre is the South Mall, with several banks whose interior derive from the 19th century, such as the Allied Irish Bank's which was once an exchange.
Is there an answer to this question: What was the Allied Irish Bank turned into in 1877?

Answer: unanswerable


QUES: The basic equipment or kit players are required to wear includes a shirt, shorts, socks, footwear and adequate shin guards. An athletic supporter and protective cup is highly recommended for male players by medical experts and professionals. Headgear is not a required piece of basic equipment, but players today may choose to wear it to protect themselves from head injury. Players are forbidden to wear or use anything that is dangerous to themselves or another player, such as jewellery or watches. The goalkeeper must wear clothing that is easily distinguishable from that worn by the other players and the match officials.

What is not required but can be chosen to protect a player from head injuries? 
What is the answer?
ANS:
Headgear