The problem: Answer a question about this article:
The Crimean War was a military conflict fought between October 1853 – March 1856 in which Russia lost to an alliance of France, the United Kingdom, the Ottoman Empire, and Sardinia. The immediate cause involved the rights of Christian minorities in the Holy Land, which was controlled by the Ottoman Empire. The French promoted the rights of Catholics, while Russia promoted those of the Eastern Orthodox Christians. The longer-term causes involved the decline of the Ottoman Empire and the unwillingness of the United Kingdom and France to allow Russia to gain territory and power at Ottoman expense. It has widely been noted that the causes, in one case involving an argument over a key, have never revealed a "greater confusion of purpose", yet led to a war noted for its "notoriously incompetent international butchery."
Who controlled the rights of Christian minorities in the Holy Land?
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The answer: Ottoman Empire


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A project that is proceeding is the creation of The Queen's Diamond Jubilee Galleries in the medieval triforium of the abbey. The aim is to create a new display area for the abbey's treasures in the galleries high up around the abbey's nave. To this end a new Gothic access tower with lift has been designed by the abbey architect and Surveyor of the Fabric, Ptolemy Dean. It is planned that the new galleries will open in 2018.
What will be created in the medieval triforium?
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The answer: The Queen's Diamond Jubilee Galleries


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John's first wife, Isabel, Countess of Gloucester, was released from imprisonment in 1214; she remarried twice, and died in 1217. John's second wife, Isabella of Angoulême, left England for Angoulême soon after the king's death; she became a powerful regional leader, but largely abandoned the children she had had by John. John had five legitimate children, all by Isabella. His eldest son, Henry III, ruled as king for the majority of the 13th century. Richard became a noted European leader and ultimately the King of the Romans in the Holy Roman Empire. Joan married Alexander II of Scotland to become his queen consort. Isabella married the Holy Roman Emperor Frederick II. His youngest daughter, Eleanor, married William Marshal's son, also called William, and later the famous English rebel Simon de Montfort. John had a number of illegitimate children by various mistresses, including nine sons – Richard, Oliver, John, Geoffrey, Henry, Osbert Gifford, Eudes, Bartholomew and probably Philip – and three daughters – Joan, Maud and probably Isabel. Of these, Joan became the most famous, marrying Prince Llywelyn the Great of Wales.
Who did Joan marry to become queen consort?
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The answer: Alexander II of Scotland


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Although a resonant antenna has a purely resistive feed-point impedance at a particular frequency, many (if not most) applications require using an antenna over a range of frequencies. An antenna's bandwidth specifies the range of frequencies over which its performance does not suffer due to a poor impedance match. Also in the case of a Yagi-Uda array, the use of the antenna very far away from its design frequency reduces the antenna's directivity, thus reducing the usable bandwidth regardless of impedance matching.
What type of antenna has impedance at a specific frequency?
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The answer:
resonant