Problem: Please answer a question about the following article about Aircraft carrier:
If the aircraft are VTOL-capable or helicopters, they do not need to decelerate and hence there is no such need. The arrested-recovery system has used an angled deck since the 1950s because, in case the aircraft does not catch the arresting wire, the short deck allows easier take off by reducing the number of objects between the aircraft and the end of the runway. It also has the advantage of separating the recovery operation area from the launch area. Helicopters and aircraft capable of vertical or short take-off and landing (V/STOL) usually recover by coming abreast the carrier on the port side and then using their hover capability to move over the flight deck and land vertically without the need for arresting gear.
What does V/STOL refer to?
A: aircraft capable of vertical or short take-off and landing
Problem: Please answer a question about the following article about Republic of the Congo:
The Portuguese explorer Diogo Cao reached the mouth of the Congo in 1484. Commercial relationships quickly grew between the inland Bantu kingdoms and European merchants who traded various commodities, manufactured goods, and people captured from the hinterlands. After centuries as a major hub for transatlantic trade, direct European colonization of the Congo river delta began in the late 19th century, subsequently eroding the power of the Bantu societies in the region.
Whose expedition arrived at the mouth of the Congo River in 1484?
A: Diogo Cao
Problem: Please answer a question about the following article about Glass:
Addition of lead(II) oxide lowers melting point, lowers viscosity of the melt, and increases refractive index. Lead oxide also facilitates solubility of other metal oxides and is used in colored glasses. The viscosity decrease of lead glass melt is very significant (roughly 100 times in comparison with soda glasses); this allows easier removal of bubbles and working at lower temperatures, hence its frequent use as an additive in vitreous enamels and glass solders. The high ionic radius of the Pb2+ ion renders it highly immobile in the matrix and hinders the movement of other ions; lead glasses therefore have high electrical resistance, about two orders of magnitude higher than soda-lime glass (108.5 vs 106.5 Ohmcm, DC at 250 C). For more details, see lead glass.
Pb2+ causes lead glass to have what?
A: high electrical resistance
Problem: Please answer a question about the following article about Gamal Abdel Nasser:
Nasser remains an iconic figure in the Arab world, particularly for his strides towards social justice and Arab unity, modernization policies, and anti-imperialist efforts. His presidency also encouraged and coincided with an Egyptian cultural boom, and launched large industrial projects, including the Aswan Dam and Helwan City. Nasser's detractors criticize his authoritarianism, his government's human rights violations, his populist relationship with the citizenry, and his failure to establish civil institutions, blaming his legacy for future dictatorial governance in Egypt. Historians describe Nasser as a towering political figure of the Middle East in the 20th century.
How did Nasser's government deal with human rights?
A:
human rights violations