The problem: Answer a question about this article:
There are three classes of components for oxide glasses: network formers, intermediates, and modifiers. The network formers (silicon, boron, germanium) form a highly cross-linked network of chemical bonds. The intermediates (titanium, aluminium, zirconium, beryllium, magnesium, zinc) can act as both network formers and modifiers, according to the glass composition. The modifiers (calcium, lead, lithium, sodium, potassium) alter the network structure; they are usually present as ions, compensated by nearby non-bridging oxygen atoms, bound by one covalent bond to the glass network and holding one negative charge to compensate for the positive ion nearby. Some elements can play multiple roles; e.g. lead can act both as a network former (Pb4+ replacing Si4+), or as a modifier.
What components of glass for networks?
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The answer: silicon, boron, germanium


The problem: Answer a question about this article:
In 1888, the Italian administration launched its first development projects in the new colony. The Eritrean Railway was completed to Saati in 1888, and reached Asmara in the highlands in 1911. The Asmara–Massawa Cableway was the longest line in the world during its time, but was later dismantled by the British in World War II. Besides major infrastructural projects, the colonial authorities invested significantly in the agricultural sector. It also oversaw the provision of urban amenities in Asmara and Massawa, and employed many Eritreans in public service, particularly in the police and public works departments. Thousands of Eritreans were concurrently enlisted in the army, serving during the Italo-Turkish War in Libya as well as the First and second Italo-Abyssinian Wars.
When did the Eritrean Railway reach the Asmara highlands?
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The answer: 1911


The problem: Answer a question about this article:
The campaigns of French Emperor and General Napoleon Bonaparte characterized the Napoleonic Era. Born on Corsica as the French invaded, and dying suspiciously on the tiny British Island of St. Helena, this brilliant commander, controlled a French Empire that, at its height, ruled a large portion of Europe directly from Paris, while many of his friends and family ruled countries such as Spain, Poland, several parts of Italy and many other Kingdoms Republics and dependencies. The Napoleonic Era changed the face of Europe forever, and old Empires and Kingdoms fell apart as a result of the mighty and "Glorious" surge of Republicanism.
From where did the French empire rule a large portion of Europe?
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The answer: Paris


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Spanish explorers traveling inland in the 16th century met Mississippian culture people at Joara, a regional chiefdom near present-day Morganton. Records of Hernando de Soto attested to his meeting with them in 1540. In 1567 Captain Juan Pardo led an expedition to claim the area for the Spanish colony and to establish another route to protect silver mines in Mexico. Pardo made a winter base at Joara, which he renamed Cuenca. His expedition built Fort San Juan and left a contingent of 30 men there, while Pardo traveled further, and built and garrisoned five other forts. He returned by a different route to Santa Elena on Parris Island, South Carolina, then a center of Spanish Florida. In the spring of 1568, natives killed all but one of the soldiers and burned the six forts in the interior, including the one at Fort San Juan. Although the Spanish never returned to the interior, this effort marked the first European attempt at colonization of the interior of what became the United States. A 16th-century journal by Pardo's scribe Bandera and archaeological findings since 1986 at Joara have confirmed the settlement.
Where would present day Joara be?
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The answer:
near present-day Morganton