Input: Read this: The United States Army (USA) is the largest branch of the United States Armed Forces and performs land-based military operations. It is one of the seven uniformed services of the United States and is designated as the Army of the United States in the United States Constitution, Article 2, Section 2, Clause 1 and United States Code, Title 10, Subtitle B, Chapter 301, Section 3001. As the largest and senior branch of the U.S. military, the modern U.S. Army has its roots in the Continental Army, which was formed (14 June 1775) to fight the American Revolutionary War (177583)before the U.S. was established as a country. After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784, to replace the disbanded Continental Army. The United States Army considers itself descended from the Continental Army, and dates its institutional inception from the origin of that armed force in 1775.
Question: What did the U.S. Navy replace?

Output: unanswerable

QUES: Since 1996, they have been archiving cached pages of web sites onto their large cluster of Linux nodes. They revisit sites every few weeks or months and archive a new version if the content has changed. Sites can also be captured on the fly by visitors who are offered a link to do so. The intent is to capture and archive content that otherwise would be lost whenever a site is changed or closed down. Their grand vision is to archive the entire Internet.

What is the ultimate aim of the visitors?
What is the answer?
ANS: unanswerable

QUES: A team led by Enrico Fermi in 1934 observed that bombarding uranium with neutrons produces the emission of beta rays (electrons or positrons from the elements produced; see beta particle). The fission products were at first mistaken for new elements of atomic numbers 93 and 94, which the Dean of the Faculty of Rome, Orso Mario Corbino, christened ausonium and hesperium, respectively. The experiments leading to the discovery of uranium's ability to fission (break apart) into lighter elements and release binding energy were conducted by Otto Hahn and Fritz Strassmann in Hahn's laboratory in Berlin. Lise Meitner and her nephew, the physicist Otto Robert Frisch, published the physical explanation in February 1939 and named the process "nuclear fission". Soon after, Fermi hypothesized that the fission of uranium might release enough neutrons to sustain a fission reaction. Confirmation of this hypothesis came in 1939, and later work found that on average about 2.5 neutrons are released by each fission of the rare uranium isotope uranium-235. Further work found that the far more common uranium-238 isotope can be transmuted into plutonium, which, like uranium-235, is also fissile by thermal neutrons. These discoveries led numerous countries to begin working on the development of nuclear weapons and nuclear power.
When was it observed that bombarding uranium with neutrons results in beta ray emission?

ANS: 1934

The possibility of unlikely victories in the earlier rounds of the competition, where lower ranked teams beat higher placed opposition, known as "giant killings", is much anticipated by the public, and is considered an integral part of the tradition and prestige of the competition, alongside that gained by teams winning the competition. Almost every club in the League Pyramid has a fondly remembered giant-killing act in its history. It is considered particularly newsworthy when a top Premier League team suffers an upset defeat, or where the giant-killer is a non-league club, i.e. from outside the professional levels of The Football League.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What is not considered newsworthy?
Ah, so.. unanswerable

Question: Season six began on Tuesday, January 16, 2007. The premiere drew a massive audience of 37.3 million viewers, peaking in the last half hour with more than 41 million viewers.
Try to answer this question if possible: What year did the sixth season of American Idol first air?
Answer: 2007

Problem: In 1867, Prince Alfred, Duke of Edinburgh and second son of Queen Victoria, visited the islands. The main settlement, Edinburgh of the Seven Seas, was named in honour of his visit. Lewis Carroll's youngest brother, the Reverend Edwin Heron Dodgson, served as an Anglican missionary and schoolteacher in Tristan da Cunha in the 1880s.
in what year did Prince Alfred visit the island?
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Answer:
1867