Here is a question about this article: The Scottish traveler James Bruce reported in 1770 that Medri Bahri was a distinct political entity from Abyssinia, noting that the two territories were frequently in conflict. The Bahre-Nagassi ("Kings of the Sea") alternately fought with or against the Abyssinians and the neighbouring Muslim Adal Sultanate depending on the geopolitical circumstances. Medri Bahri was thus part of the Christian resistance against Imam Ahmad ibn Ibrahim al-Ghazi of Adal's forces, but later joined the Adalite states and the Ottoman Empire front against Abyssinia in 1572. That 16th century also marked the arrival of the Ottomans, who began making inroads in the Red Sea area.
What is the answer to this question: In 1770, who reported that Medri Bahri was a distinct political entity from Abyssinia?
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So... James Bruce


The problem: Answer a question about this article:
Solar hot water systems use sunlight to heat water. In low geographical latitudes (below 40 degrees) from 60 to 70% of the domestic hot water use with temperatures up to 60 °C can be provided by solar heating systems. The most common types of solar water heaters are evacuated tube collectors (44%) and glazed flat plate collectors (34%) generally used for domestic hot water; and unglazed plastic collectors (21%) used mainly to heat swimming pools.
How much hot water can be produced by solar heating systems in low geographical latitudes?
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The answer: 60 to 70% of the domestic hot water


Problem: Please answer a question about the following article about Annelid:
No single feature distinguishes Annelids from other invertebrate phyla, but they have a distinctive combination of features. Their bodies are long, with segments that are divided externally by shallow ring-like constrictions called annuli and internally by septa ("partitions") at the same points, although in some species the septa are incomplete and in a few cases missing. Most of the segments contain the same sets of organs, although sharing a common gut, circulatory system and nervous system makes them inter-dependent. Their bodies are covered by a cuticle (outer covering) that does not contain cells but is secreted by cells in the skin underneath, is made of tough but flexible collagen and does not molt – on the other hand arthropods' cuticles are made of the more rigid α-chitin, and molt until the arthropods reach their full size. Most annelids have closed circulatory systems, where the blood makes its entire circuit via blood vessels.
What do the segments of an annelid share?
A: a common gut, circulatory system and nervous system


Question: Read this and answer the question

Although coal, hydrocarbons, iron ore, platinum, copper, chromium, nickel, gold and other minerals have been found, they have not been in large enough quantities to exploit. The 1991 Protocol on Environmental Protection to the Antarctic Treaty also restricts a struggle for resources. In 1998, a compromise agreement was reached to place an indefinite ban on mining, to be reviewed in 2048, further limiting economic development and exploitation. The primary economic activity is the capture and offshore trading of fish. Antarctic fisheries in 2000–01 reported landing 112,934 tonnes.

When will the mining ban be reviewed?
Answer: 2048


Problem: Around 3.8 million people work in Switzerland; about 25% of employees belonged to a trade union in 2004. Switzerland has a more flexible job market than neighbouring countries and the unemployment rate is very low. The unemployment rate increased from a low of 1.7% in June 2000 to a peak of 4.4% in December 2009. The unemployment rate is 3.2% in 2014. Population growth from net immigration is quite high, at 0.52% of population in 2004. The foreign citizen population was 21.8% in 2004, about the same as in Australia. GDP per hour worked is the world's 16th highest, at 49.46 international dollars in 2012.
What was the foreign citizen population percentage in Switzerland in 2014?
The answer is the following: 21.8%


Input: Article: In June 1854, the Allied expeditionary force landed at Varna, a city on the Black Sea's western coast (now in Bulgaria). They made little advance from their base there.:175–176 In July 1854, the Turks under Omar Pasha crossed the Danube into Wallachia and on 7 July 1854, engaged the Russians in the city of Giurgiu and conquered it. The capture of Giurgiu by the Turks immediately threatened Bucharest in Wallachia with capture by the same Turk army. On 26 July 1854, Tsar Nicholas I ordered the withdrawal of Russian troops from the Principalities. Also, in late July 1854, following up on the Russian retreat, the French staged an expedition against the Russian forces still in Dobruja, but this was a failure.:188–190

Now answer this question: In what year did the Turks cross the Danube into Wallachia ?

Output:
1854