Problem: Greece's rail network is estimated to be at 2,548 km. Rail transport in Greece is operated by TrainOSE, a subsidiary of the Hellenic Railways Organization (OSE). Most of the country's network is standard gauge (1,565 km), while the country also has 983 km of narrow gauge. A total of 764 km of rail are electrified. Greece has rail connections with Bulgaria, the Republic of Macedonia and Turkey. A total of three suburban railway systems (Proastiakos) are in operation (in Athens, Thessaloniki and Patras), while one metro system is operational in Athens with another under construction.
What gauge is most of Greece's railway?
The answer is the following: standard gauge

Problem: The first Roman republican wars were wars of both expansion and defence, aimed at protecting Rome itself from neighbouring cities and nations and establishing its territory in the region. Initially, Rome's immediate neighbours were either Latin towns and villages, or else tribal Sabines from the Apennine hills beyond. One by one Rome defeated both the persistent Sabines and the local cities, both those under Etruscan control and those that had cast off their Etruscan rulers. Rome defeated Latin cities in the Battle of Lake Regillus in 496 BC, the Battle of Mons Algidus in 458 BC, the Battle of Corbione in 446 BC, the Battle of Aricia, and especially the Battle of the Cremera in 477 BC wherein it fought against the most important Etruscan city of Veii.
What year did the Battle of Lake Regillus take place?
The answer is the following: 496 BC

Problem: After disenfranchisement of blacks, the GOP in Tennessee was historically a sectional party supported by whites only in the eastern part of the state. In the 20th century, except for two nationwide Republican landslides of the 1920s (in 1920, when Tennessee narrowly supported Warren G. Harding over Ohio Governor James Cox, and in 1928, when it more decisively voted for Herbert Hoover over New York Governor Al Smith, a Catholic), the state was part of the Democratic Solid South until the 1950s. In that postwar decade, it twice voted for Republican Dwight D. Eisenhower, former Allied Commander of the Armed Forces during World War II. Since then, more of the state's voters have shifted to supporting Republicans, and Democratic presidential candidates have carried Tennessee only four times.
What religion was the Democratic presidential candidate that Tennessee voted against in 1928?
The answer is the following: Catholic

Problem: Another study on men and women's patterns of sexual arousal confirmed that men and women have different patterns of arousal, independent of their sexual orientations. The study found that women's genitals become aroused to both human and nonhuman stimuli from movies showing humans of both genders having sex (heterosexual and homosexual) and from videos showing non-human primates (bonobos) having sex. Men did not show any sexual arousal to non-human visual stimuli, their arousal patterns being in line with their specific sexual interest (women for heterosexual men and men for homosexual men).
Do men and women's patterns of arousal differ?
The answer is the following:
men and women have different patterns of arousal