Article: In the UK, the London, Brighton and South Coast Railway pioneered overhead electrification of its suburban lines in London, London Bridge to Victoria being opened to traffic on 1 December 1909. Victoria to Crystal Palace via Balham and West Norwood opened in May 1911. Peckham Rye to West Norwood opened in June 1912. Further extensions were not made owing to the First World War. Two lines opened in 1925 under the Southern Railway serving Coulsdon North and Sutton railway station. The lines were electrified at 6.7 kV 25 Hz. It was announced in 1926 that all lines were to be converted to DC third rail and the last overhead electric service ran in September 1929.

Question: When was overhead wires system being used for the first time in UK?
Ans: 1 December 1909

Article: Cooperative breeding in birds typically occurs when offspring, usually males, delay dispersal from their natal group in order to remain with the family to help rear younger kin. Female offspring rarely stay at home, dispersing over distances that allow them to breed independently, or to join unrelated groups. In general, inbreeding is avoided because it leads to a reduction in progeny fitness (inbreeding depression) due largely to the homozygous expression of deleterious recessive alleles. Cross-fertilization between unrelated individuals ordinarily leads to the masking of deleterious recessive alleles in progeny.

Question: Why is inbreeding avoided?
Ans: because it leads to a reduction in progeny fitness

Article: Gaddafi's ideological worldview was moulded by his environment, namely his Islamic faith, his Bedouin upbringing, and his disgust at the actions of European colonialists in Libya. He was driven by a sense of "divine mission", believing himself a conduit of Allah's will, and thought that he must achieve his goals "no matter what the cost". Raised within the Sunni branch of Islam, Gaddafi called for the implementation of sharia within Libya. He desired unity across the Islamic world, and encouraged the propagation of the faith elsewhere. On a 2010 visit to Italy, he paid a modelling agency to find 200 young Italian women for a lecture he gave urging them to convert. He also funded the construction and renovation of two mosques in Africa, including Uganda's Kampala Mosque. He nevertheless clashed with conservative Libyan clerics as to his interpretation of Islam. Many criticised his attempts to encourage women to enter traditionally male-only sectors of society, such as the armed forces. Gaddafi was keen to improve women's status, though saw the sexes as "separate but equal" and therefore felt women should usually remain in traditional roles.

Question: In what ethnic culture was Gaddafi raised?
Ans: Bedouin

Article: PlayStation 3 uses the Cell microprocessor, designed by Sony, Toshiba and IBM, as its CPU, which is made up of one 3.2 GHz PowerPC-based "Power Processing Element" (PPE) and eight Synergistic Processing Elements (SPEs). The eighth SPE is disabled to improve chip yields. Only six of the seven SPEs are accessible to developers as the seventh SPE is reserved by the console's operating system. Graphics processing is handled by the NVIDIA RSX 'Reality Synthesizer', which can produce resolutions from 480i/576i SD up to 1080p HD. PlayStation 3 has 256 MB of XDR DRAM main memory and 256 MB of GDDR3 video memory for the RSX.

Question: How many Synergistic Processing Elements are in a PS3's CPU?
Ans:
eight