Q: Extract the answer to the question from the following context. Question: What event led the city to lead in growth? Context: In northern Galicia, the A Coruna-Ferrol metropolitan area has become increasingly dominant in terms of population. The population of the city of A Coruna in 1900 was 43,971. The population of the rest of the province including the City and Naval Station of nearby Ferrol and Santiago de Compostela was 653,556. A Coruna's growth occurred after the Spanish Civil War at the same speed as other major Galician cities, but it was the arrival of democracy in Spain after the death of Francisco Franco when A Coruna left all the other Galician cities behind.
A: the arrival of democracy in Spain after the death of Francisco Franco

Q: Extract the answer to the question from the following context. Question: Where might one find a program counter? Context: A key component common to all CPUs is the program counter, a special memory cell (a register) that keeps track of which location in memory the next instruction is to be read from.
A: CPUs

Q: Extract the answer to the question from the following context. Question: Of the countries that Gaddafi tried to revolutionize, which were part of the same continent? Context: On 16 April 1973, Gaddafi proclaimed the start of a "Popular Revolution" in a Zuwarah speech. He initiated this with a 5-point plan, the first point of which dissolved all existing laws, to be replaced by revolutionary enactments. The second point proclaimed that all opponents of the revolution had to be removed, while the third initiated an administrative revolution that Gaddafi proclaimed would remove all traces of bureaucracy and the bourgeoisie. The fourth point announced that the population must form People's Committees and be armed to defend the revolution, while the fifth proclaimed the beginning of a cultural revolution to expunge Libya of "poisonous" foreign influences. He began to lecture on this new phase of the revolution in Libya, Egypt, and France.
A: Libya, Egypt

Q: Extract the answer to the question from the following context. Question: Refraction can be changed by adding materials of various what? Context: Glass has the ability to refract, reflect, and transmit light following geometrical optics, without scattering it. It is used in the manufacture of lenses and windows. Common glass has a refraction index around 1.5. This may be modified by adding low-density materials such as boron, which lowers the index of refraction (see crown glass), or increased (to as much as 1.8) with high-density materials such as (classically) lead oxide (see flint glass and lead glass), or in modern uses, less toxic oxides of zirconium, titanium, or barium. These high-index glasses (inaccurately known as "crystal" when used in glass vessels) cause more chromatic dispersion of light, and are prized for their diamond-like optical properties.
A:
density