Problem: Philadelphia:

Europeans came to the Delaware Valley in the early 17th century, with the first settlements founded by the Dutch, who in 1623 built Fort Nassau on the Delaware River opposite the Schuylkill River in what is now Brooklawn, New Jersey. The Dutch considered the entire Delaware River valley to be part of their New Netherland colony. In 1638, Swedish settlers led by renegade Dutch established the colony of New Sweden at Fort Christina (present day Wilmington, Delaware) and quickly spread out in the valley. In 1644, New Sweden supported the Susquehannocks in their military defeat of the English colony of Maryland. In 1648, the Dutch built Fort Beversreede on the west bank of the Delaware, south of the Schuylkill near the present-day Eastwick section of Philadelphia, to reassert their dominion over the area. The Swedes responded by building Fort Nya Korsholm, named New Korsholm after a town that is now in Finland. In 1655, a Dutch military campaign led by New Netherland Director-General Peter Stuyvesant took control of the Swedish colony, ending its claim to independence, although the Swedish and Finnish settlers continued to have their own militia, religion, and court, and to enjoy substantial autonomy under the Dutch. The English conquered the New Netherland colony in 1664, but the situation did not really change until 1682, when the area was included in William Penn's charter for Pennsylvania.

Who claimed the entire Delaware River?
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A: The Dutch

Problem: Clinton returned in 1780 with 14,000 soldiers. American General Benjamin Lincoln was trapped and surrendered his entire 5,400-man force after a long fight, and the Siege of Charles Towne was the greatest American defeat of the war. Several Americans who escaped the carnage joined other militias, including those of Francis Marion, the "Swamp Fox"; and Andrew Pickens. The British retained control of the city until December 1782. After the British left, the city's name was officially changed to Charleston in 1783.
How many soldiers didn't General Lincoln lead?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
On April 25, 1976, at Dodger Stadium, father-and-son protestors ran into the outfield and tried to set fire to a U.S. flag. When Cubs outfielder Rick Monday noticed the flag on the ground and the man and boy fumbling with matches and lighter fluid, he dashed over and snatched the flag to thunderous applause. When he came up to bat in the next half-inning, he got a standing ovation from the crowd and the stadium titantron flashed the message, "RICK MONDAY... YOU MADE A GREAT PLAY..." Monday later said, "If you're going to burn the flag, don't do it around me. I've been to too many veterans' hospitals and seen too many broken bodies of guys who tried to protect it."
Who grabbed the flag before protesters could light it on fire?
A: Rick Monday

Context and question: The In-no-cho filled the void left by the decline of Fujiwara power. Rather than being banished, the Fujiwara were mostly retained in their old positions of civil dictator and minister of the center while being bypassed in decision making. In time, many of the Fujiwara were replaced, mostly by members of the rising Minamoto family. While the Fujiwara fell into disputes among themselves and formed northern and southern factions, the insei system allowed the paternal line of the imperial family to gain influence over the throne. The period from 1086 to 1156 was the age of supremacy of the In-no-cho and of the rise of the military class throughout the country. Military might rather than civil authority dominated the government.
The members of what clan gradually replaced the Fujiwaras?
Answer: Minamoto

Question: The PV industry has seen drops in module prices since 2008. In late 2011, factory-gate prices for crystalline-silicon photovoltaic modules dropped below the $1.00/W mark. The $1.00/W installed cost, is often regarded in the PV industry as marking the achievement of grid parity for PV. These reductions have taken many stakeholders, including industry analysts, by surprise, and perceptions of current solar power economics often lags behind reality. Some stakeholders still have the perspective that solar PV remains too costly on an unsubsidized basis to compete with conventional generation options. Yet technological advancements, manufacturing process improvements, and industry re-structuring, mean that further price reductions are likely in coming years.
Is there an answer to this question: What is a sign that further price reductions are likely in coming years?

Answer: technological advancements

Problem: Napoleon:

The initial military maneuvers began in September 1806. In a notable letter to Marshal Soult detailing the plan for the campaign, Napoleon described the essential features of Napoleonic warfare and introduced the phrase le bataillon-carre ('square battalion'). In the bataillon-carre system, the various corps of the Grande Armee would march uniformly together in close supporting distance. If any single corps was attacked, the others could quickly spring into action and arrive to help. Napoleon invaded Prussia with 180,000 troops, rapidly marching on the right bank of the River Saale. As in previous campaigns, his fundamental objective was to destroy one opponent before reinforcements from another could tip the balance of the war. Upon learning the whereabouts of the Prussian army, the French swung westwards and crossed the Saale with overwhelming force. At the twin battles of Jena and Auerstedt, fought on 14 October, the French convincingly defeated the Prussians and inflicted heavy casualties. With several major commanders dead or incapacitated, the Prussian king proved incapable of effectively commanding the army, which began to quickly disintegrate. In a vaunted pursuit that epitomized the "peak of Napoleonic warfare," according to historian Richard Brooks, the French managed to capture 140,000 soldiers, over 2,000 cannons and hundreds of ammunition wagons, all in a single month. Historian David Chandler wrote of the Prussian forces: "Never has the morale of any army been more completely shattered." Despite their overwhelming defeat, the Prussians refused to negotiate with the French until the Russians had an opportunity to enter the fight.

What river did the French cross to engage the Prussian army?
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A:
the Saale