Input: Read this: Linking the information back together is the key to this system. In the relational model, some bit of information was used as a "key", uniquely defining a particular record. When information was being collected about a user, information stored in the optional tables would be found by searching for this key. For instance, if the login name of a user is unique, addresses and phone numbers for that user would be recorded with the login name as its key. This simple "re-linking" of related data back into a single collection is something that traditional computer languages are not designed for.
Question: What is a key no longer used for?

Output: unanswerable

QUES: In its first century and half, the EIC used a few hundred soldiers as guards. The great expansion came after 1750, when it had 3000 regular troops. By 1763, it had 26,000; by 1778, it had 67,000. It recruited largely Indian troops, and trained them along European lines. The company, fresh from a colossal victory, and with the backing of its own private well-disciplined and experienced army, was able to assert its interests in the Carnatic region from its base at Madras and in Bengal from Calcutta, without facing any further obstacles from other colonial powers.

In 1750 how many regular troops did the EIC have?
What is the answer?
ANS: 3000

QUES: Between 1832 and 2002 the currency of Greece was the drachma. After signing the Maastricht Treaty, Greece applied to join the eurozone. The two main convergence criteria were a maximum budget deficit of 3% of GDP and a declining public debt if it stood above 60% of GDP. Greece met the criteria as shown in its 1999 annual public account. On 1 January 2001, Greece joined the eurozone, with the adoption of the euro at the fixed exchange rate 340.75 to 1. However, in 2001 the euro only existed electronically, so the physical exchange from drachma to euro only took place on 1 January 2002. This was followed by a ten-year period for eligible exchange of drachma to euro, which ended on 1 March 2012.
When did the physical exchange of the drachma to euro take place?

ANS: January 2002

The Han dynasty (Chinese: ; pinyin: Han chao) was the second imperial dynasty of China, preceded by the Qin dynasty (221207 BC) and succeeded by the Three Kingdoms period (220280 AD). Spanning over four centuries, the Han period is considered a golden age in Chinese history. To this day, China's majority ethnic group refers to itself as the "Han people" and the Chinese script is referred to as "Han characters". It was founded by the rebel leader Liu Bang, known posthumously as Emperor Gaozu of Han, and briefly interrupted by the Xin dynasty (923 AD) of the former regent Wang Mang. This interregnum separates the Han dynasty into two periods: the Western Han or Former Han (206 BC 9 AD) and the Eastern Han or Later Han (25220 AD).
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What dynasty came before the Han dynasty?
Ah, so.. Qin

Question: Code points in the range U+D800U+DBFF (1,024 code points) are known as high-surrogate code points, and code points in the range U+DC00U+DFFF (1,024 code points) are known as low-surrogate code points. A high-surrogate code point (also known as a leading surrogate) followed by a low-surrogate code point (also known as a trailing surrogate) together form a surrogate pair used in UTF-16 to represent 1,048,576 code points outside BMP. High and low surrogate code points are not valid by themselves. Thus the range of code points that are available for use as characters is U+0000U+D7FF and U+E000U+10FFFF (1,112,064 code points). The value of these code points (i.e., excluding surrogates) is sometimes referred to as the character's scalar value.
Try to answer this question if possible: What are code points in the range U+D800-U+DBFF known as?
Answer: high-surrogate code points

Problem: Throughout its history, the city has been a major port of entry for immigrants into the United States; more than 12 million European immigrants were received at Ellis Island between 1892 and 1924. The term "melting pot" was first coined to describe densely populated immigrant neighborhoods on the Lower East Side. By 1900, Germans constituted the largest immigrant group, followed by the Irish, Jews, and Italians. In 1940, whites represented 92% of the city's population.
Between 1892-1924, how many immigrants came through Ellis Island?
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Answer:
more than 12 million