Question: Read this and answer the question

Electrochemical migration (ECM) is the growth of conductive metal filaments on or in a printed circuit board (PCB) under the influence of a DC voltage bias. Silver, zinc, and aluminum are known to grow whiskers under the influence of an electric field. Silver also grows conducting surface paths in the presence of halide and other ions, making it a poor choice for electronics use. Tin will grow "whiskers" due to tension in the plated surface. Tin-Lead or solder plating also grows whiskers, only reduced by the percentage Tin replaced. Reflow to melt solder or tin plate to relieve surface stress lowers whisker incidence. Another coating issue is tin pest, the transformation of tin to a powdery allotrope at low temperature.

In addition to "whiskers," what does silver sprout around ions like halide?
Answer: conducting surface paths

Problem: The restoration of power to the patriciate was only temporary. After a period of unrest with repeated violent clashes such as the Zuriputsch of 1839, civil war (the Sonderbundskrieg) broke out in 1847 when some Catholic cantons tried to set up a separate alliance (the Sonderbund). The war lasted for less than a month, causing fewer than 100 casualties, most of which were through friendly fire. Yet however minor the Sonderbundskrieg appears compared with other European riots and wars in the 19th century, it nevertheless had a major impact on both the psychology and the society of the Swiss and of Switzerland.
How long did the Swiss civil war in 1839 last?
The answer is the following: less than a month

The official introduction of the metric system in September 1799 was unpopular in large sections of French society. Napoleon's rule greatly aided adoption of the new standard not only across France but also across the French sphere of influence. Napoleon ultimately took a retrograde step in 1812 when he passed legislation to introduce the mesures usuelles (traditional units of measurement) for retail tradea system of measure that resembled the pre-revolutionary units but were based on the kilogram and the metre; for example the livre metrique (metric pound) was 500 g instead of 489.5 gthe value of the livre du roi (the king's pound). Other units of measure were rounded in a similar manner. This however laid the foundations for the definitive introduction of the metric system across Europe in the middle of the 19th century.
How many grams were in the livre metrique?
500

Input: Tucson, Arizona
Arizona, south of the Gila River was legally bought from Mexico in the Gadsden Purchase on June 8, 1854. Tucson became a part of the United States of America, although the American military did not formally take over control until March 1856. In 1857 Tucson became a stage station on the San Antonio-San Diego Mail Line and in 1858 became 3rd division headquarters of the Butterfield Overland Mail until the line shut down in March 1861. The Overland Mail Corporation attempted to continue running, however following the Bascom Affair, devastating Apache attacks on the stations and coaches ended operations in August 1861.[citation needed]

When did the mail stagecoaches stop running?
Output: August 1861

Input: Article: The Kakatiya dynasty was reduced to a vassal of the Khilji dynasty in 1310 after its defeat by Sultan Alauddin Khilji of the Delhi Sultanate. This lasted until 1321, when the Kakatiya dynasty was annexed by Malik Kafur, Allaudin Khilji's general. During this period, Alauddin Khilji took the Koh-i-Noor diamond, which is said to have been mined from the Kollur Mines of Golkonda, to Delhi. Muhammad bin Tughluq succeeded to the Delhi sultanate in 1325, bringing Warangal under the rule of the Tughlaq dynasty until 1347 when Ala-ud-Din Bahman Shah, a governor under bin Tughluq, rebelled against Delhi and established the Bahmani Sultanate in the Deccan Plateau, with Gulbarga, 200 km (124 mi) west of Hyderabad, as its capital. The Bahmani kings ruled the region until 1518 and were the first independent Muslim rulers of the Deccan.

Now answer this question: In what year did Muhammad bin Tughluq succeed the Delhi sultanate?

Output: 1325

Problem: On February 29, 2012, Microsoft released Windows 8 Consumer Preview, the beta version of Windows 8, build 8250. Alongside other changes, the build removed the Start button from the taskbar for the first time since its debut on Windows 95; according to Windows manager Chaitanya Sareen, the Start button was removed to reflect their view that on Windows 8, the desktop was an "app" itself, and not the primary interface of the operating system. Windows president Steven Sinofsky said more than 100,000 changes had been made since the developer version went public. The day after its release, Windows 8 Consumer Preview had been downloaded over one million times. Like the Developer Preview, the Consumer Preview expired on January 15, 2013.
When was the Consumer Preview set to expire?
The answer is the following:
January 15, 2013