Input: Printed circuit board
Holes through a PCB are typically drilled with small-diameter drill bits made of solid coated tungsten carbide. Coated tungsten carbide is recommended since many board materials are very abrasive and drilling must be high RPM and high feed to be cost effective. Drill bits must also remain sharp so as not to mar or tear the traces. Drilling with high-speed-steel is simply not feasible since the drill bits will dull quickly and thus tear the copper and ruin the boards. The drilling is performed by automated drilling machines with placement controlled by a drill tape or drill file. These computer-generated files are also called numerically controlled drill (NCD) files or "Excellon files". The drill file describes the location and size of each drilled hole.

What's another name for NCD files that has an "x" in it?
Output: Excellon files


Input: Article: Tajikistan (i/tɑːˈdʒiːkᵻstɑːn/, /təˈdʒiːkᵻstæn/, or /tæˈdʒiːkiːstæn/; Persian: تاجيكستان‎‎ Тоҷикистон [tɔd͡ʒikɪsˈtɔn]), officially the Republic of Tajikistan (Persian: جمهورى تاجيكستان‎‎ Tajik: Ҷумҳурии Тоҷикистон, Çumhuriji Toçikiston/Jumhuriyi Tojikiston; Russian: Респу́блика Таджикистан, Respublika Tadzhikistan), is a mountainous, landlocked country in Central Asia with an estimated 8 million people in 2013, and an area of 143,100 km2 (55,300 sq mi). It is bordered by Afghanistan to the south, Uzbekistan to the west, Kyrgyzstan to the north, and China to the east. Pakistan lies to the south, separated by the narrow Wakhan Corridor. Traditional homelands of Tajik people included present-day Tajikistan, Afghanistan and Uzbekistan.

Now answer this question: How many people are living in Tajikistan?

Output: 8 million people


Article: After the constitutional changes of 1974, Tito began reducing his role in the day-to-day running of the state. He continued to travel abroad and receive foreign visitors, going to Beijing in 1977 and reconciling with a Chinese leadership that had once branded him a revisionist. In turn, Chairman Hua Guofeng visited Yugoslavia in 1979. In 1978, Tito traveled to the U.S. During the visit strict security was imposed in Washington, D.C. owing to protests by anti-communist Croat, Serb and Albanian groups.

Question: In what year did Tito travel to the U.S. to visit Washington D.C., amist protest by anti-communist Croat, Serb and Albanian groups?
Ans: 1978


Here is a question about this article: Teenager Sanjaya Malakar was the season's most talked-about contestant for his unusual hairdo, and for managing to survive elimination for many weeks due in part to the weblog Vote for the Worst and satellite radio personality Howard Stern, who both encouraged fans to vote for him. However, on April 18, Sanjaya was voted off.
What is the answer to this question: Which weblog helped Sanjaya survive elimination week over and over again?
****
So... Vote for the Worst


The problem: Answer a question about this article:
Besides increased efficiency of power plants, there was an increase in efficiency (between 1950 and 1973) of the railway utilization of this electricity with energy-intensity dropping from 218 to 124 kwh/10,000 gross tonne-km (of both passenger and freight trains) or a 43% drop. Since energy-intensity is the inverse of energy-efficiency it drops as efficiency goes up. But most of this 43% decrease in energy-intensity also benefited diesel traction. The conversion of wheel bearings from plain to roller, increase of train weight, converting single track lines to double track (or partially double track), and the elimination of obsolete 2-axle freight cars increased the energy-efficiency of all types of traction: electric, diesel, and steam. However, there remained a 12–15% reduction of energy-intensity that only benefited electric traction (and not diesel). This was due to improvements in locomotives, more widespread use of regenerative braking (which in 1989 recycled 2.65% of the electric energy used for traction,) remote control of substations, better handling of the locomotive by the locomotive crew, and improvements in automation. Thus the overall efficiency of electric traction as compared to diesel more than doubled between 1950 and the mid-1970s in the Soviet Union. But after 1974 (thru 1980) there was no improvement in energy-intensity (wh/tonne-km) in part due to increasing speeds of passenger and freight trains.
What caused the energy efficiency to go up?
****
The answer: energy-intensity dropping


The problem: Answer a question about this article:
Despite the failures in Egypt, Napoleon returned to a hero's welcome. He drew together an alliance with director Emmanuel Joseph Sieyès, his brother Lucien, speaker of the Council of Five Hundred Roger Ducos, director Joseph Fouché, and Talleyrand, and they overthrew the Directory by a coup d'état on 9 November 1799 ("the 18th Brumaire" according to the revolutionary calendar), closing down the council of five hundred. Napoleon became "first consul" for ten years, with two consuls appointed by him who had consultative voices only. His power was confirmed by the new "Constitution of the Year VIII", originally devised by Sieyès to give Napoleon a minor role, but rewritten by Napoleon, and accepted by direct popular vote (3,000,000 in favor, 1,567 opposed). The constitution preserved the appearance of a republic but in reality established a dictatorship.
Napoleon's ally Roger Ducos was the speaker for what organization?
****
The answer:
the Council of Five Hundred