Question: The vast majority of visitors in Greece in 2007 came from the European continent, numbering 12.7 million, while the most visitors from a single nationality were those from the United Kingdom, (2.6 million), followed closely by those from Germany (2.3 million). In 2010, the most visited region of Greece was that of Central Macedonia, with 18% of the country's total tourist flow (amounting to 3.6 million tourists), followed by Attica with 2.6 million and the Peloponnese with 1.8 million. Northern Greece is the country's most-visited geographical region, with 6.5 million tourists, while Central Greece is second with 6.3 million.
Is there an answer to this question: What is the single nation with the most visitors?

Answer: United Kingdom

Question: Christian Marian perspectives include a great deal of diversity. While some Christians such as Roman Catholics and Eastern Orthodox have well established Marian traditions, Protestants at large pay scant attention to Mariological themes. Roman Catholic, Eastern Orthodox, Oriental Orthodox, Anglican, and Lutherans venerate the Virgin Mary. This veneration especially takes the form of prayer for intercession with her Son, Jesus Christ. Additionally it includes composing poems and songs in Mary's honor, painting icons or carving statues of her, and conferring titles on Mary that reflect her position among the saints.
Is there an answer to this question: Who do the saints compose poems and songs about?

Answer: unanswerable

Question: After 1870, the new railroads across the Plains brought hunters who killed off almost all the bison for their hides. The railroads offered attractive packages of land and transportation to European farmers, who rushed to settle the land. They (and Americans as well) also took advantage of the homestead laws to obtain free farms. Land speculators and local boosters identified many potential towns, and those reached by the railroad had a chance, while the others became ghost towns. In Kansas, for example, nearly 5000 towns were mapped out, but by 1970 only 617 were actually operating. In the mid-20th century, closeness to an interstate exchange determined whether a town would flourish or struggle for business.
Is there an answer to this question: what farmers rushed in to settle the land with the help of the railroads?

Answer: European farmers

Question: Weather and climate in the coastal area are dominated by the cold, north-flowing Benguela current of the Atlantic Ocean which accounts for very low precipitation (50 mm per year or less), frequent dense fog, and overall lower temperatures than in the rest of the country. In Winter, occasionally a condition known as Bergwind (German: Mountain breeze) or Oosweer (Afrikaans: East weather) occurs, a hot dry wind blowing from the inland to the coast. As the area behind the coast is a desert, these winds can develop into sand storms with sand deposits in the Atlantic Ocean visible on satellite images.
Is there an answer to this question: What lies to the east of Namibia?

Answer:
unanswerable