Problem: Late Middle Ages:

The ideas of the Italian Renaissance were slow to cross the Alps into northern Europe, but important artistic innovations were made also in the Low Countries. Though not as previously believed the inventor of oil painting, Jan van Eyck was a champion of the new medium, and used it to create works of great realism and minute detail. The two cultures influenced each other and learned from each other, but painting in the Netherlands remained more focused on textures and surfaces than the idealized compositions of Italy.

What wasn't the focus of paintings in Italy?
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A: unanswerable

Problem: Mary had been venerated since Early Christianity, and is considered by millions to be the most meritorious saint of the religion. The Eastern and Oriental Orthodox, Roman Catholic, Anglican, and Lutheran Churches believe that Mary, as Mother of Jesus, is the Mother of God and the Theotokos, literally "Giver of birth to God". There is significant diversity in the Marian beliefs and devotional practices of major Christian traditions. The Roman Catholic Church holds distinctive Marian dogmas; namely her status as the mother of God; her Immaculate Conception; her perpetual virginity; and her Assumption into heaven. Many Protestants minimize Mary's role within Christianity, based on the argued brevity of biblical references. Mary (Maryam) also has a revered position in Islam, where a whole chapter of the Qur'an is devoted to her, also describing the birth of Jesus.
What is the basis for Mary's diminished role in Protestantism?
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Answer: brevity of biblical references

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The economic reforms of President Carlos Salinas de Gortari had a tremendous effect on the city, as a number of businesses, including banks and airlines, were privatized. He also signed the North American Free Trade Agreement (NAFTA). This led to decentralization and a shift in Mexico City's economic base, from manufacturing to services, as most factories moved away to either the State of Mexico, or more commonly to the northern border. By contrast, corporate office buildings set their base in the city.
Who privatized the airlines of Mexico?
A: President Carlos Salinas de Gortari

Context and question: In 2012, President Rachide Sambu-balde Malam Bacai Sanha died. He belonged to PAIGC (African Party for the Independence of Guinea and Cape Verde), one of the two major political parties in Guinea-Bissau, along with the PRS (Party for Social Renewal). There are more than 20 minor parties.
When did President Sanha die?
Answer: 2012

Question: At the 57th Annual Grammy Awards in February 2015, Beyonce was nominated for six awards, ultimately winning three: Best R&B Performance and Best R&B Song for "Drunk in Love", and Best Surround Sound Album for Beyonce. She was nominated for Album of the Year but the award was won by Beck for his Morning Phase album. In August, the cover of the September issue of Vogue magazine was unveiled online, Beyonce as the cover star, becoming the first African-American artist and third African-American woman in general to cover the September issue. She headlined the 2015 Made in America festival in early September and also the Global Citizen Festival later that month. Beyonce made an uncredited featured appearance on the track "Hymn for the Weekend" by British rock band Coldplay, on their seventh studio album A Head Full of Dreams (2015), which saw release in December. On January 7, 2016, Pepsi announced Beyonce would perform alongside Coldplay at Super Bowl 50 in February. Knowles has previously performed at four Super Bowl shows throughout her career, serving as the main headliner of the 47th Super Bowl halftime show in 2013.
Is there an answer to this question: Who did Beyonce perform with at Super Bowl 50?

Answer: Coldplay

QUES: It is fairly clear that predators tend to lower the survival and fecundity of their prey, but on a higher level of organization, populations of predator and prey species also interact. It is obvious that predators depend on prey for survival, and this is reflected in predator populations being affected by changes in prey populations. It is not so obvious, however, that predators affect prey populations. Eating a prey organism may simply make room for another if the prey population is approaching its carrying capacity.

What do different species of predators do when they encounter each other?
What is the answer?
ANS:
unanswerable