Question: The Greek national basketball team has a decades-long tradition of excellence in the sport, being considered among the world's top basketball powers. As of 2012, it ranked 4th in the world and 2nd in Europe. They have won the European Championship twice in 1987 and 2005, and have reached the final four in two of the last four FIBA World Championships, taking the second place in the world in 2006 FIBA World Championship, after a spectacular 101–95 win against Team USA in the tournament's semifinal. The domestic top basketball league, A1 Ethniki, is composed of fourteen teams. The most successful Greek teams are Olympiacos, Panathinaikos, Aris Thessaloniki, AEK Athens and P.A.O.K. Greek basketball teams are the most successful in European basketball the last 25 years, having won as many as 9 Euroleagues since the establishment of the modern era Euroleague Final Four format in 1988, while no other nation has won more than 4 Euroleague championships in this period. Besides the 9 Euroleagues, Greek basketball teams (Panathinaikos, Olympiacos, Aris Thessaloniki, AEK Athens, P.A.O.K, Maroussi) have won 3 Triple Crowns, 5 Saporta Cups, 2 Korać Cups and 1 FIBA Europe Champions Cup. After the 2005 European Championship triumph of the Greek national basketball team, Greece became the reigning European Champion in both football and basketball.
Is there an answer to this question: How many times has the Greek national basketball team won the European championship?

Answer: twice


Question: Today both the Papireto river and the Kemonia are covered up by buildings. However, the shape of the former watercourses can still be recognised today, because the streets that were built on them follow their shapes. Today the only waterway not drained yet is the Oreto river that divides the downtown of the city from the western uptown and the industrial districts. In the basins there were, though, many seasonal torrents that helped formed swampy plains, reclaimed during history; a good example of which can be found in the borough of Mondello.
Is there an answer to this question: How can former rivers be recognised presently?

Answer: the streets that were built on them follow their shapes


Question: It was not long until Apple released their first portable computer, the Macintosh Portable in 1989. Although due to considerable design issues, it was soon replaced in 1991 with the first of the PowerBook line: the PowerBook 100, a miniaturized portable; the 16 MHz 68030 PowerBook 140; and the 25 MHz 68030 PowerBook 170. They were the first portable computers with the keyboard behind a palm rest and a built-in pointing device (a trackball) in front of the keyboard. The 1993 PowerBook 165c was Apple's first portable computer to feature a color screen, displaying 256 colors with 640 x 400-pixel resolution. The second generation of PowerBooks, the 68040-equipped 500 series, introduced trackpads, integrated stereo speakers, and built-in Ethernet to the laptop form factor in 1994.
Is there an answer to this question: What was the 1992 PowerBook 165c Apple's first portable computer to feature?

Answer: unanswerable


Question: With nitrides containing aluminium, most often AlGaN and AlGaInN, even shorter wavelengths are achievable. Ultraviolet LEDs in a range of wavelengths are becoming available on the market. Near-UV emitters at wavelengths around 375–395 nm are already cheap and often encountered, for example, as black light lamp replacements for inspection of anti-counterfeiting UV watermarks in some documents and paper currencies. Shorter-wavelength diodes, while substantially more expensive, are commercially available for wavelengths down to 240 nm. As the photosensitivity of microorganisms approximately matches the absorption spectrum of DNA, with a peak at about 260 nm, UV LED emitting at 250–270 nm are to be expected in prospective disinfection and sterilization devices. Recent research has shown that commercially available UVA LEDs (365 nm) are already effective disinfection and sterilization devices. UV-C wavelengths were obtained in laboratories using aluminium nitride (210 nm), boron nitride (215 nm) and diamond (235 nm).
Is there an answer to this question: What sort of LEDs are becoming more available on the market?

Answer:
Ultraviolet