Problem: Memory:

One question that is crucial in cognitive neuroscience is how information and mental experiences are coded and represented in the brain. Scientists have gained much knowledge about the neuronal codes from the studies of plasticity, but most of such research has been focused on simple learning in simple neuronal circuits; it is considerably less clear about the neuronal changes involved in more complex examples of memory, particularly declarative memory that requires the storage of facts and events (Byrne 2007). Convergence-divergence zones might be the neural networks where memories are stored and retrieved.

Have researchers learned anything studying elasticity?
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A: unanswerable

Problem: Crevasses can form in several different ways. Transverse crevasses are transverse to flow and form where steeper slopes cause a glacier to accelerate. Longitudinal crevasses form semi-parallel to flow where a glacier expands laterally. Marginal crevasses form from the edge of the glacier, due to the reduction in speed caused by friction of the valley walls. Marginal crevasses are usually largely transverse to flow. Moving glacier ice can sometimes separate from stagnant ice above, forming a bergschrund. Bergschrunds resemble crevasses but are singular features at a glacier's margins.
Which crevasses form on the edge of the glacier?
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Answer: Marginal crevasses

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Labour improved its performance in 1987, gaining 20 seats and so reducing the Conservative majority from 143 to 102. They were now firmly re-established as the second political party in Britain as the Alliance had once again failed to make a breakthrough with seats. A merger of the SDP and Liberals formed the Liberal Democrats. Following the 1987 election, the National Executive Committee resumed disciplinary action against members of Militant, who remained in the party, leading to further expulsions of their activists and the two MPs who supported the group.
When did Labour worsen its performance?
A: unanswerable

Context and question: Gaddafi financially supported other militant groups across the world, including the Black Panther Party, Nation of Islam, Tupamaros, 19th of April Movement and Sandinista National Liberation Front in the Americas, the ANC among other liberation movements in the fight against Apartheid in South Africa, the Provisional Irish Republican Army, ETA, Sardinian nationalists, Action directe, the Red Brigades, and the Red Army Faction in Europe, and the Armenian Secret Army, Japanese Red Army, Free Aceh Movement, and Moro National Liberation Front in Asia. Gaddafi was indiscriminate in the causes he funded, sometimes switching from supporting one side in a conflict to the other, as in the Eritrean War of Independence. Throughout the 1970s these groups received financial support from Libya, which came to be seen as a leader in the Third World's struggle against colonialism and neocolonialism. Though many of these groups were labelled "terrorists" by critics of their activities, Gaddafi rejected such a characterisation, instead considering them revolutionaries engaged in liberation struggles.
On what continent did the Red Army Faction operate?
Answer: Europe

Question: The UK government has spent 250 million in the construction of the island's airport. Expected to be fully operational early 2016, it is expected to help the island towards self-sufficiency and encourage economic development, reducing dependence on British government aid. The airport is also expected to kick start the tourism industry, with up to 30,000 visitors expected annually. As of August, 2015 ticketing was postponed until an airline could be firmly designated.
Is there an answer to this question: How many tourists are expected annually thanks to the airport?

Answer: up to 30,000

Portuguese pavement (in Portuguese, Calcada Portuguesa) is a kind of two-tone stone mosaic paving created in Portugal, and common throughout the Lusosphere. Most commonly taking the form of geometric patterns from the simple to the complex, it also is used to create complex pictorial mosaics in styles ranging from iconography to classicism and even modern design. In Portuguese-speaking countries, many cities have a large amount of their sidewalks and even, though far more occasionally, streets done in this mosaic form. Lisbon in particular maintains almost all walkways in this style.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Which city has almost all of its sidewalks in Portuguese pavement?
Ah, so..
Lisbon