Input: Read this: This in turn led to the establishment of the right-wing dictatorship of the Estado Novo under Antonio de Oliveira Salazar in 1933. Portugal was one of only five European countries to remain neutral in World War II. From the 1940s to the 1960s, Portugal was a founding member of NATO, OECD and the European Free Trade Association (EFTA). Gradually, new economic development projects and relocation of mainland Portuguese citizens into the overseas provinces in Africa were initiated, with Angola and Mozambique, as the largest and richest overseas territories, being the main targets of those initiatives. These actions were used to affirm Portugal's status as a transcontinental nation and not as a colonial empire.
Question: How many European countries remained neutral throughout World War II?

Output: five

Input: Read this: Motorcycles are also commonly used, particularly in locations that a car may not be able to reach, to control potential public order situations involving meetings of motorcyclists and often in escort duties where motorcycle police officers can quickly clear a path for escorted vehicles. Bicycle patrols are used in some areas because they allow for more open interaction with the public. In addition, their quieter operation can facilitate approaching suspects unawares and can help in pursuing them attempting to escape on foot.
Question: How do bicycles help catch some police officers?

Output: unanswerable

Input: Read this: ASCII (i/ski/ ASS-kee), abbreviated from American Standard Code for Information Interchange, is a character-encoding scheme (the IANA prefers the name US-ASCII). ASCII codes represent text in computers, communications equipment, and other devices that use text. Most modern character-encoding schemes are based on ASCII, though they support many additional characters. ASCII was the most common character encoding on the World Wide Web until December 2007, when it was surpassed by UTF-8, which is fully backward compatibe to ASCII.
Question: What does most communications equipment represent?

Output: unanswerable

Input: Read this: In the former Soviet Union, electric traction eventually became somewhat more energy-efficient than diesel. Partly due to inefficient generation of electricity in the USSR (only 20.8% thermal efficiency in 1950 vs. 36.2% in 1975), in 1950 diesel traction was about twice as energy efficient as electric traction (in terms of net tonne-km of freight per kg of fuel). But as efficiency of electricity generation (and thus of electric traction) improved, by about 1965 electric railways became more efficient than diesel. After the mid 1970s electrics used about 25% less fuel per ton-km. However diesels were mainly used on single track lines with a fair amount of traffic so that the lower fuel consumption of electrics may be in part due to better operating conditions on electrified lines (such as double tracking) rather than inherent energy efficiency. Nevertheless, the cost of diesel fuel was about 1.5 times more (per unit of heat energy content) than that of the fuel used in electric power plants (that generated electricity), thus making electric railways even more energy-cost effective.
Question: When was diesel traction three times as efficient as electric traction?

Output:
unanswerable