user: Problem: Hydrogen:

In 1671, Robert Boyle discovered and described the reaction between iron filings and dilute acids, which results in the production of hydrogen gas. In 1766, Henry Cavendish was the first to recognize hydrogen gas as a discrete substance, by naming the gas from a metal-acid reaction "flammable air". He speculated that "flammable air" was in fact identical to the hypothetical substance called "phlogiston" and further finding in 1781 that the gas produces water when burned. He is usually given credit for its discovery as an element. In 1783, Antoine Lavoisier gave the element the name hydrogen (from the Greek ὑδρο- hydro meaning "water" and -γενής genes meaning "creator") when he and Laplace reproduced Cavendish's finding that water is produced when hydrogen is burned.

What does gas produce when burned?
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A: water


Problem: FC Barcelona:

On 11 August, Barcelona started the 2015–16 season winning a joint record fifth European Super Cup by beating Sevilla FC 5–4 in the 2015 UEFA Super Cup. They ended the year with a 3–0 win over Argentine club River Plate in the 2015 FIFA Club World Cup Final on 20 December to win the trophy for a record third time, with Suárez, Messi and Iniesta the top three players of the tournament. The FIFA Club World Cup was Barcelona's 20th international title, a record only matched by Egyptian club Al Ahly SC. By scoring 180 goals in 2015 in all competitions, Barcelona set the record for most goals scored in a calendar year, breaking Real Madrid's record of 178 goals scored in 2014.

What teams previous record was 178 goals in a year?
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A: Real Madrid


Problem: Hellenistic period:

The Celts who settled in Galatia came through Thrace under the leadership of Leotarios and Leonnorios circa 270 BC. They were defeated by Seleucus I in the 'battle of the Elephants', but were still able to establish a Celtic territory in central Anatolia. The Galatians were well respected as warriors and were widely used as mercenaries in the armies of the successor states. They continued to attack neighboring kingdoms such as Bithynia and Pergamon, plundering and extracting tribute. This came to an end when they sided with the renegade Seleucid prince Antiochus Hierax who tried to defeat Attalus, the ruler of Pergamon (241–197 BC). Attalus severely defeated the Gauls, forcing them to confine themselves to Galatia. The theme of the Dying Gaul (a famous statue displayed in Pergamon) remained a favorite in Hellenistic art for a generation signifying the victory of the Greeks over a noble enemy. In the early 2nd century BC, the Galatians became allies of Antiochus the Great, the last Seleucid king trying to regain suzerainty over Asia Minor. In 189 BC, Rome sent Gnaeus Manlius Vulso on an expedition against the Galatians. Galatia was henceforth dominated by Rome through regional rulers from 189 BC onward.

What century did the Galatians become allies of Antiochus the Great?
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A: 2nd century BC


Problem: Windows 8:

The upgrade addressed a number of criticisms faced by Windows 8 upon its release, with additional customization options for the Start screen, the restoration of a visible Start button on the desktop, the ability to snap up to four apps on a single display, and the ability to boot to the desktop instead of the Start screen. Windows 8's stock apps were also updated, a new Bing-based unified search system was added, SkyDrive was given deeper integration with the operating system, and a number of new stock apps, along with a tutorial, were added. Windows 8.1 also added support for 3D printing, Miracast media streaming, NFC printing, and Wi-Fi Direct.

How many apps did the WIndows 9.1 update allow to be snapped onto a signular display?
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A:

assistant: unanswerable