Here is a question about this article: The first known smelting of iron began in Anatolia, around 1800 BC. Called the bloomery process, it produced very soft but ductile wrought iron. By 800 BC, iron-making technology had spread to Europe, arriving in Japan around 700 AD. Pig iron, a very hard but brittle alloy of iron and carbon, was being produced in China as early as 1200 BC, but did not arrive in Europe until the Middle Ages. Pig iron has a lower melting point than iron, and was used for making cast-iron. However, these metals found little practical use until the introduction of crucible steel around 300 BC. These steels were of poor quality, and the introduction of pattern welding, around the 1st century AD, sought to balance the extreme properties of the alloys by laminating them, to create a tougher metal. Around 700 AD, the Japanese began folding bloomery-steel and cast-iron in alternating layers to increase the strength of their swords, using clay fluxes to remove slag and impurities. This method of Japanese swordsmithing produced one of the purest steel-alloys of the early Middle Ages.
What is the answer to this question: When did the smelting of iron first begin?
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So... around 1800 BC


Here is a question about this article: Some powerful Polish nobles were referred to as "magnates" (Polish singular: "magnat", plural: "magnaci") and "możny" ("magnate", "oligarch"; plural: "możni"); see Magnates of Poland and Lithuania.
What is the answer to this question: What is the plural version of mozny?
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So... możni


Here is a question about this article: From the semi-finals onwards, the fate of the contestants is decided by public vote. During the contestant's performance as well as the recap at the end, a toll-free telephone number for each contestant is displayed on the screen. For a two-hour period after the episode ends (up to four hours for the finale) in each US time zone, viewers may call or send a text message to their preferred contestant's telephone number, and each call or text message is registered as a vote for that contestant. Viewers are allowed to vote as many times as they can within the two-hour voting window. However, the show reserves the right to discard votes by power dialers. One or more of the least popular contestants may be eliminated in successive weeks until a winner emerges. Over 110 million votes were cast in the first season, and by season ten the seasonal total had increased to nearly 750 million. Voting via text messaging was made available in the second season when AT&T Wireless joined as a sponsor of the show, and 7.5 million text messages were sent to American Idol that season. The number of text messages rapidly increased, reaching 178 million texts by season eight. Online voting was offered for the first time in season ten. The votes are counted and verified by Telescope Inc.
What is the answer to this question: At what point does the public begin voting for contestants?
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So...
the semi-finals