The problem: Answer a question about this article:
Portugal is a significant European minerals producer and is ranked among Europe's leading copper producers. The nation is also a notable producer of tin, tungsten and uranium. However, the country lacks the potential to conduct hydrocarbon exploration and aluminium, a limitation that has hindered the development of Portugal's mining and metallurgy sectors. Although the country has vast iron and coal reserves—mainly in the north—after the 1974 revolution and the consequent economic globalization, low competitiveness forced a decrease in the extraction activity for these minerals. The Panasqueira and Neves-Corvo mines are among the most recognised Portuguese mines that are still in operation.[citation needed]
What are three types of minerals Portugal is a notable producer of?
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The answer: tin, tungsten and uranium


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With the continuing controversy that had surrounded the military service of George W. Bush since the 2000 Presidential election (when he was accused of having used his father's political influence to gain entrance to the Texas Air National Guard, thereby protecting himself from conscription into the United States Army, and possible service in the Vietnam War), John Kerry's contrasting status as a decorated Vietnam War veteran posed a problem for Bush's re-election campaign, which Republicans sought to counter by calling Kerry's war record into question. As the presidential campaign of 2004 developed, approximately 250 members of a group called Swift Boat Veterans for Truth (SBVT, later renamed Swift Vets and POWs for Truth) opposed Kerry's campaign. The group held press conferences, ran ads and endorsed a book questioning Kerry's service record and his military awards. The group included several members of Kerry's unit, such as Larry Thurlow, who commanded a swift boat alongside of Kerry's, and Stephen Gardner, who served on Kerry's boat. The campaign inspired the widely used political pejorative 'swiftboating', to describe an unfair or untrue political attack. Most of Kerry's former crewmates have stated that SBVT's allegations are false.
How did Republicans attack Kerry?
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The answer: by calling Kerry's war record into question


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Chopin's public popularity as a virtuoso began to wane, as did the number of his pupils, and this, together with the political strife and instability of the time, caused him to struggle financially. In February 1848, with the cellist Auguste Franchomme, he gave his last Paris concert, which included three movements of the Cello Sonata Op. 65.
In what month and year did Chopin give his final performance?
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The answer: February 1848


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The first landing was followed by another, precision landing on Apollo 12 in November 1969. NASA had achieved its first landing goal with enough Apollo spacecraft and Saturn V launchers left for eight follow-on lunar landings through Apollo 20, conducting extended-endurance missions and transporting the landing crews in Lunar Roving Vehicles on the last five. They also planned an Apollo Applications Program to develop a longer-duration Earth orbital workshop (later named Skylab) to be constructed in orbit from a spent S-IVB upper stage, using several launches of the smaller Saturn IB launch vehicle. But planners soon decided this could be done more efficiently by using the two live stages of a Saturn V to launch the workshop pre-fabricated from an S-IVB (which was also the Saturn V third stage), which immediately removed Apollo 20. Belt-tightening budget cuts soon led NASA to cut Apollo 18 and 19 as well, but keep three extended/Lunar Rover missions. Apollo 13 encountered an in-flight spacecraft failure and had to abort its lunar landing in April 1970, returning its crew safely but temporarily grounding the program again. It resumed with four successful landings on Apollo 14 (February 1971), Apollo 15 (July 1971), Apollo 16 (April 1972), and Apollo 17 (December 1972).
Apollo 15 landed on the Moon on what date?
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The answer:
July 1971