Problem: Videoconferencing:

A videoconference system is generally higher cost than a videophone and deploys greater capabilities. A videoconference (also known as a videoteleconference) allows two or more locations to communicate via live, simultaneous two-way video and audio transmissions. This is often accomplished by the use of a multipoint control unit (a centralized distribution and call management system) or by a similar non-centralized multipoint capability embedded in each videoconferencing unit. Again, technology improvements have circumvented traditional definitions by allowing multiple party videoconferencing via web-based applications.

What is a videophone also known as?
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A: unanswerable

Problem: In August 2005, Houston became a shelter to more than 150,000 people from New Orleans who evacuated from Hurricane Katrina. One month later, approximately 2.5 million Houston area residents evacuated when Hurricane Rita approached the Gulf Coast, leaving little damage to the Houston area. This was the largest urban evacuation in the history of the United States. In September 2008, Houston was hit by Hurricane Ike. As many as forty percent refused to leave Galveston Island because they feared the traffic problems that happened after Hurricane Rita.
Fearing traffic problems, how many people flew out of Galveston before Hurricane Ike?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Greece is a democratic and developed country with an advanced high-income economy, a high quality of life and a very high standard of living. A founding member of the United Nations, Greece was the tenth member to join the European Communities (precursor to the European Union) and has been part of the Eurozone since 2001. It is also a member of numerous other international institutions, including the Council of Europe, NATO,[a] OECD, OIF, OSCE and the WTO. Greece, which is one of the world's largest shipping powers, middle powers and top tourist destinations, has the largest economy in the Balkans, where it is an important regional investor.
Which political philosophy does Greece follow?
A: democratic

Context and question: In 1238, King James I of Aragon, with an army composed of Aragonese, Catalans, Navarrese and crusaders from the Order of Calatrava, laid siege to Valencia and on 28 September obtained a surrender. Fifty thousand Moors were forced to leave. Poets such as Ibn al-Abbar and Ibn Amira mourned this exile from their beloved Valencia. After the Christian victory and the expulsion of the Muslim population the city was divided between those who had participated in the conquest, according to the testimony in the Llibre del Repartiment (Book of Distribution). James I granted the city new charters of law, the Furs of Valencia, which later were extended to the whole kingdom of Valencia. Thenceforth the city entered a new historical stage in which a new society and a new language developed, forming the basis of the character of the Valencian people as they are known today.
What group did the crusaders who attacked Valencia belong to?
Answer: Order of Calatrava

Question: Following the Tavora affair, the new Count of Oeiras knew no opposition. Made "Marquis of Pombal" in 1770, he effectively ruled Portugal until Joseph I's death in 1779. However, historians also argue that Pombal's "enlightenment," while far-reaching, was primarily a mechanism for enhancing autocracy at the expense of individual liberty and especially an apparatus for crushing opposition, suppressing criticism, and furthering colonial economic exploitation as well as intensifying book censorship and consolidating personal control and profit.
Is there an answer to this question: How long did the Marquis of Pombal rule Portugal?

Answer: until Joseph I's death in 1779

Problem: Political party:

In dominant-party systems, opposition parties are allowed, and there may be even a deeply established democratic tradition, but other parties are widely considered to have no real chance of gaining power. Sometimes, political, social and economic circumstances, and public opinion are the reason for others parties' failure. Sometimes, typically in countries with less of an established democratic tradition, it is possible the dominant party will remain in power by using patronage and sometimes by voting fraud. In the latter case, the definition between dominant and one-party system becomes rather blurred. Examples of dominant party systems include the People's Action Party in Singapore, the African National Congress in South Africa, the Cambodian People's Party in Cambodia, the Liberal Democratic Party in Japan, and the National Liberation Front in Algeria. One-party dominant system also existed in Mexico with the Institutional Revolutionary Party until the 1990s, in the southern United States with the Democratic Party from the late 19th century until the 1970s, in Indonesia with the Golkar from the early 1970s until 1998.

What are some parties that were guilty of using voter fraud?
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A:
unanswerable