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.

Who succeeded Abd al-Malik?
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A: unanswerable

Problem: In 2010 and 2011, state and federal funds were awarded to Connecticut (and Massachusetts) to construct the Hartford Line, with a southern terminus at New Haven's Union Station and a northern terminus at Springfield's Union Station. According to the White House, "This corridor [currently] has one train per day connecting communities in Connecticut and Massachusetts to the Northeast Corridor and Vermont. The vision for this corridor is to restore the alignment to its original route via the Knowledge Corridor in western Massachusetts, improving trip time and increasing the population base that can be served." Set for construction in 2013, the "Knowledge Corridor high speed intercity passenger rail" project will cost approximately $1 billion, and the ultimate northern terminus for the project is reported to be Montreal in Canada. Train speeds between will reportedly exceed 110 miles per hour (180 km/h) and increase both cities' rail traffic exponentially.
When does the Knowledge Corridor line begins it's construction?
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Answer: in 2013

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
After the incorporation of these states to the United States in the first half of the 19th century, the Spanish language was later reinforced in the country by the acquisition of Puerto Rico in 1898. Later waves of emigration from Mexico, Cuba, El Salvador and elsewhere in Hispanic America to the United States beginning in the second half of the 19th century to the present-day have strengthened the role of the Spanish language in the country. Today, Hispanics are one of the fastest growing demographics in the United States, thus increasing the use and importance of American Spanish in the United States.
Which century did the US incorporate Spanish?
A: unanswerable

Context and question: Doctrinal development has had an important place in the restoration of the Preachers. Several institutions, besides those already mentioned, played important parts. Such is the Biblical school at Jerusalem, open to the religious of the order and to secular clerics, which publishes the Revue Biblique. The faculty of theology at the University of Fribourg, confided to the care of the Dominicans in 1890, is flourishing, and has about 250 students. The Pontificium Collegium Internationale Angelicum, the future Pontifical University of Saint Thomas Aquinas, Angelicum established at Rome in 1908 by Master Hyacinth Cormier, opened its doors to regulars and seculars for the study of the sacred sciences. In addition to the reviews above are the Revue Thomiste, founded by Pere Thomas Coconnier (d. 1908), and the Analecta Ordinis Prdicatorum (1893). Among numerous writers of the order in this period are: Cardinals Thomas Zigliara (d. 1893) and Zephirin Gonzalez (d. 1894), two esteemed philosophers; Alberto Guillelmotti (d. 1893), historian of the Pontifical Navy, and Heinrich Denifle, one of the most famous writers on medieval history (d. 1905).[citation needed]
What school does not publish the Reve Biblique?
Answer: unanswerable

Question: Tajikistan's rivers, such as the Vakhsh and the Panj, have great hydropower potential, and the government has focused on attracting investment for projects for internal use and electricity exports. Tajikistan is home to the Nurek Dam, the highest dam in the world. Lately, Russia's RAO UES energy giant has been working on the Sangtuda-1 hydroelectric power station (670 MW capacity) commenced operations on 18 January 2008. Other projects at the development stage include Sangtuda-2 by Iran, Zerafshan by the Chinese company SinoHydro, and the Rogun power plant that, at a projected height of 335 metres (1,099 ft), would supersede the Nurek Dam as highest in the world if it is brought to completion. A planned project, CASA 1000, will transmit 1000 MW of surplus electricity from Tajikistan to Pakistan with power transit through Afghanistan. The total length of transmission line is 750 km while the project is planned to be on Public-Private Partnership basis with the support of WB, IFC, ADB and IDB. The project cost is estimated to be around US$865 million. Other energy resources include sizable coal deposits and smaller reserves of natural gas and petroleum.
Is there an answer to this question: What is something that the rivers in Tajikistan are good for?

Answer: hydropower potential

Question: Under the Capetian dynasty France slowly began to expand its authority over the nobility, growing out of the Ile-de-France to exert control over more of the country in the 11th and 12th centuries. They faced a powerful rival in the Dukes of Normandy, who in 1066 under William the Conqueror (duke 10351087), conquered England (r. 106687) and created a cross-channel empire that lasted, in various forms, throughout the rest of the Middle Ages. Normans also settled in Sicily and southern Italy, when Robert Guiscard (d. 1085) landed there in 1059 and established a duchy that later became the Kingdom of Sicily. Under the Angevin dynasty of Henry II (r. 115489) and his son Richard I (r. 118999), the kings of England ruled over England and large areas of France,[W] brought to the family by Henry II's marriage to Eleanor of Aquitaine (d. 1204), heiress to much of southern France.[X] Richard's younger brother John (r. 11991216) lost Normandy and the rest of the northern French possessions in 1204 to the French King Philip II Augustus (r. 11801223). This led to dissension among the English nobility, while John's financial exactions to pay for his unsuccessful attempts to regain Normandy led in 1215 to Magna Carta, a charter that confirmed the rights and privileges of free men in England. Under Henry III (r. 121672), John's son, further concessions were made to the nobility, and royal power was diminished. The French monarchy continued to make gains against the nobility during the late 12th and 13th centuries, bringing more territories within the kingdom under their personal rule and centralising the royal administration. Under Louis IX (r. 122670), royal prestige rose to new heights as Louis served as a mediator for most of Europe.[Y]
Is there an answer to this question: During what period did William reign over England?

Answer:
106687