Input: Read this: Selenizza is a naturally occurring solid hydrocarbon bitumen found in the native asphalt deposit of Selenice, in Albania, the only European asphalt mine still in use. The rock asphalt is found in the form of veins, filling cracks in a more or less horizontal direction. The bitumen content varies from 83% to 92% (soluble in carbon disulphide), with a penetration value near to zero and a softening point (ring & ball) around 120 C. The insoluble matter, consisting mainly of silica ore, ranges from 8% to 17%.
Question: What type of matter ranges from 7% to 20%?

Output: unanswerable

QUES: During World War II, the British at Bletchley Park achieved a number of successes at breaking encrypted German military communications. The German encryption machine, Enigma, was first attacked with the help of the electro-mechanical bombes. To crack the more sophisticated German Lorenz SZ 40/42 machine, used for high-level Army communications, Max Newman and his colleagues commissioned Flowers to build the Colossus. He spent eleven months from early February 1943 designing and building the first Colossus. After a functional test in December 1943, Colossus was shipped to Bletchley Park, where it was delivered on 18 January 1944 and attacked its first message on 5 February.

Who built the first Colossus in 1943?
What is the answer?
ANS: Flowers

QUES: Jared Diamond describes an "Evil Quartet" of habitat destruction, overkill, introduced species, and secondary extinctions. Edward O. Wilson prefers the acronym HIPPO, standing for Habitat destruction, Invasive species, Pollution, human over-Population, and Over-harvesting. The most authoritative classification in use today is IUCN's Classification of Direct Threats which has been adopted by major international conservation organizations such as the US Nature Conservancy, the World Wildlife Fund, Conservation International, and BirdLife International.
Who describes the "IUCN"?

ANS: unanswerable

Theoretical obligations between a samurai and his lord (usually a daimyo) increased from the Genpei era to the Edo era. They were strongly emphasized by the teachings of Confucius and Mencius (ca 550 BC), which were required reading for the educated samurai class. Bushido was formalized by several influential leaders and families before the Edo Period. Bushido was an ideal, and it remained fairly uniform from the 13th century to the 19th century the ideals of Bushido transcended social class, time and geographic location of the warrior class.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Who formalized Bushido?
Ah, so.. several influential leaders and families

Question: Today, most commercial web browsers are paid by search engine companies to make their engine default, or to include them as another option. For example, Google pays Mozilla, the maker of Firefox, to make Google Search the default search engine in Firefox. Mozilla makes enough money from this deal that it does not need to charge users for Firefox. In addition, Google Search is also (as one would expect) the default search engine in Google Chrome. Users searching for websites or items on the Internet would be led to Google's search results page, increasing ad revenue and which funds development at Google and of Google Chrome.
Try to answer this question if possible: Which company pays Firefox to make their search engine the default on their browser?
Answer: Google

Problem: Once inside the Rotunda for the Charters of Freedom, there are no lines to see the individual documents and visitors are allowed to walk from document to document as they wish. For over 30 years the National Archives have forbidden flash photography but the advent of cameras with automatic flashes have made the rules increasingly difficult to enforce. As a result, all filming, photographing, and videotaping by the public in the exhibition areas has been prohibited since February 25, 2010.
What has made the no photography rule hard to enforce in the Rotunda for the Charters of Freedom?
---
Answer:
advent of cameras with automatic flashes