Article: Copper occurs naturally as native copper and was known to some of the oldest civilizations on record. It has a history of use that is at least 10,000 years old, and estimates of its discovery place it at 9000 BC in the Middle East; a copper pendant was found in northern Iraq that dates to 8700 BC. There is evidence that gold and meteoric iron (but not iron smelting) were the only metals used by humans before copper. The history of copper metallurgy is thought to have followed the following sequence: 1) cold working of native copper, 2) annealing, 3) smelting, and 4) the lost wax method. In southeastern Anatolia, all four of these metallurgical techniques appears more or less simultaneously at the beginning of the Neolithic c. 7500 BC. However, just as agriculture was independently invented in several parts of the world, copper smelting was invented locally in several different places. It was probably discovered independently in China before 2800 BC, in Central America perhaps around 600 AD, and in West Africa about the 9th or 10th century AD. Investment casting was invented in 4500–4000 BC in Southeast Asia and carbon dating has established mining at Alderley Edge in Cheshire, UK at 2280 to 1890 BC. Ötzi the Iceman, a male dated from 3300–3200 BC, was found with an axe with a copper head 99.7% pure; high levels of arsenic in his hair suggest his involvement in copper smelting. Experience with copper has assisted the development of other metals; in particular, copper smelting led to the discovery of iron smelting. Production in the Old Copper Complex in Michigan and Wisconsin is dated between 6000 and 3000 BC. Natural bronze, a type of copper made from ores rich in silicon, arsenic, and (rarely) tin, came into general use in the Balkans around 5500 BC.[citation needed]

Question: When was copper thought to have been discovered in China?
Ans: 2800 BC


Article: Spectre was released on 26 October 2015 in the United Kingdom on the same night as the world premiere at the Royal Albert Hall in London, followed by a worldwide release. It was released in the United States on 6 November 2015. It became the second James Bond film to be screened in IMAX venues after Skyfall, although it was not filmed with IMAX cameras. Spectre received mixed reviews upon its release; although criticised for its length, lack of screen time for new characters, and writing, it received praise for its action sequences and cinematography. The theme song, "Writing's on the Wall", received mixed reviews, particularly compared to the previous theme; nevertheless, it won the Golden Globe for Best Original Song and was nominated for the Academy Award in the same category. As of 20 February 2016[update], Spectre has grossed over $879 million worldwide.

Question: What was the US release date for Spectre?
Ans: 6 November 2015


Article: Napoleon married Joséphine de Beauharnais in 1796, when he was 26; she was a 32-year-old widow whose first husband had been executed during the Revolution. Until she met Bonaparte, she had been known as "Rose", a name which he disliked. He called her "Joséphine" instead, and she went by this name henceforth. Bonaparte often sent her love letters while on his campaigns. He formally adopted her son Eugène and cousin Stéphanie and arranged dynastic marriages for them. Joséphine had her daughter Hortense marry Napoleon's brother Louis.

Question: How old was Napoleon when he married Joséphine de Beauharnais?
Ans: 26


Article: Northwestern's Evanston campus, where the undergraduate schools, the Graduate School, and the Kellogg School of Management are located, runs north-south from Lincoln Avenue to Clark Street west of Lake Michigan along Sheridan Road. North and South Campuses have noticeably different atmospheres, owing to the predominance of Science and Athletics in the one and Humanities and Arts in the other. North Campus is home to the fraternity quads, the Henry Crown Sports Pavilion and Norris Aquatics Center and other athletic facilities, the Technological Institute, Dearborn Observatory, and other science-related buildings including Patrick G. and Shirley W. Ryan Hall for Nanofabrication and Molecular Self-Assembly, and the Ford Motor Company Engineering Design Center. South Campus is home to the University's humanities buildings, Pick-Staiger Concert Hall and other music buildings, the Mary and Leigh Block Museum of Art, and the sorority quads. In the 1960s, the University created an additional 84 acres (34.0 ha) by means of a lakefill in Lake Michigan. Among some of the buildings located on these broad new acres are University Library, Norris University Center (the student union), and Pick-Staiger Concert Hall.

Question: What is noticably different between Northwestern's North and South Campuses?
Ans:
atmospheres