Problem: Bird migration:

In polygynous species with considerable sexual dimorphism, males tend to return earlier to the breeding sites than their females. This is termed protandry.

What happens in polygynous species with sexual dimophism?
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A: males tend to return earlier to the breeding sites

Problem: In September 2008, the crisis hit its most critical stage. There was the equivalent of a bank run on the money market funds, which frequently invest in commercial paper issued by corporations to fund their operations and payrolls. Withdrawal from money markets were $144.5 billion during one week, versus $7.1 billion the week prior. This interrupted the ability of corporations to rollover (replace) their short-term debt. The U.S. government responded by extending insurance for money market accounts analogous to bank deposit insurance via a temporary guarantee and with Federal Reserve programs to purchase commercial paper. The TED spread, an indicator of perceived credit risk in the general economy, spiked up in July 2007, remained volatile for a year, then spiked even higher in September 2008, reaching a record 4.65% on October 10, 2008.
What was the record high for the TED spread on October 10, 2008?
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Answer: 4.65%

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
High levels of precipitation cause the glaciers to descend to permafrost levels in some areas whereas in other, more arid regions, glaciers remain above about the 3,500 m (11,483 ft) level. The 1,817 square kilometres (702 sq mi) of the Alps covered by glaciers in 1876 had shrunk to 1,342 km2 (518 sq mi) by 1973, resulting in decreased river run-off levels. Forty percent of the glaciation in Austria has disappeared since 1850, and 30% of that in Switzerland.
How much of the glaciation disappeared in Switzerland?
A: 30%

Context and question: Americans of English descent and Americans of Scots-Irish descent began moving into northern Florida from the backwoods of Georgia and South Carolina. Though technically not allowed by the Spanish authorities, the Spanish were never able to effectively police the border region and the backwoods settlers from the United States would continue to migrate into Florida unchecked. These migrants, mixing with the already present British settlers who had remained in Florida since the British period, would be the progenitors of the population known as Florida Crackers.
Where did English and Scotch Irish descent move to Florida from
Answer: English descent and Americans of Scots-Irish descent began moving into northern Florida from the backwoods of Georgia and South Carolina

Question: In 1939 East Prussia had 2.49 million inhabitants, 85% of them ethnic Germans, the others Poles in the south who, according to Polish estimates numbered in the interwar period around 300,000-350,000, the Latvian speaking Kursenieki, and Lietuvininkai who spoke Lithuanian in the northeast. Most German East Prussians, Masurians, Kursieniki, and Lietuvininkai were Lutheran, while the population of Ermland was mainly Roman Catholic due to the history of its bishopric. The East Prussian Jewish Congregation declined from about 9,000 in 1933 to 3,000 in 1939, as most fled from Nazi rule. Those who remained were later deported and killed in the Holocaust.
Is there an answer to this question: Where did the Kursenieki live?

Answer: unanswerable

QUES: Madonna's emergence occurred during the advent of MTV; Chris Nelson from The New York Times spoke of pop artists like Madonna saying, "MTV, with its almost exclusively lip-synched videos, ushered in an era in which average music fans might happily spend hours a day, every day, watching singers just mouth the words." The symbiotic relationship between the music video and lip-syncing led to a desire for the spectacle and imagery of the music video to be transferred to live stage shows. He added, "Artists like Madonna and Janet Jackson set new standards for showmanship, with concerts that included not only elaborate costumes and precision-timed pyrotechnics but also highly athletic dancing. These effects came at the expense of live singing." Thor Christensen of The Dallas Morning News commented that while Madonna earned a reputation for lip-syncing during her 1990 Blond Ambition World Tour, she has subsequently reorganized her performances by "stay[ing] mostly still during her toughest singing parts and [leaves] the dance routines to her backup troupe ... [r]ather than try to croon and dance up a storm at the same time."

Who earned a reputation of lip synching in the Blond Ambition Tour?
What is the answer?
ANS:
Madonna