Article: In the north, substantial efforts were made against Newcastle-upon-Tyne and Sunderland, which were large ports on the English east coast. On 9 April 1941 Luftflotte 2 dropped 150 tons of high explosives and 50,000 incendiaries from 120 bombers in a five-hour attack. Sewer, rail, docklands, and electric installations were damaged. In Sunderland on 25 April, Luftflotte 2 sent 60 bombers which dropped 80 tons of high explosive and 9,000 incendiaries. Much damage was done. A further attack on the Clyde, this time at Greenock, took place on 6 and 7 May. However, as with the attacks in the south, the Germans failed to prevent maritime movements or cripple industry in the regions.

Question: How many bombers were used in a five-hour attack?
Ans: 120

Article: The art of carpet weaving was particularly significant in the Ottoman Empire, carpets having an immense importance both as decorative furnishings, rich in religious and other symbolism, and as a practical consideration, as it was customary to remove one's shoes in living quarters. The weaving of such carpets originated in the nomadic cultures of central Asia (carpets being an easily transportable form of furnishing), and was eventually spread to the settled societies of Anatolia. Turks used carpets, rugs and kilims not just on the floors of a room, but also as a hanging on walls and doorways, where they provided additional insulation. They were also commonly donated to mosques, which often amassed large collections of them.

Question: Kilims were used by Turks to provide insulation where?
Ans: walls and doorways

Article: Semi-additive is the most common process: The unpatterned board has a thin layer of copper already on it. A reverse mask is then applied. (Unlike a subtractive process mask, this mask exposes those parts of the substrate that will eventually become the traces.) Additional copper is then plated onto the board in the unmasked areas; copper may be plated to any desired weight. Tin-lead or other surface platings are then applied. The mask is stripped away and a brief etching step removes the now-exposed bare original copper laminate from the board, isolating the individual traces. Some single-sided boards which have plated-through holes are made in this way. General Electric made consumer radio sets in the late 1960s using additive boards.

Question: What metal is used to plate the unmasked parts of the board in the semi-additive method?
Ans: copper

Article: The Richmond Times-Dispatch, the local daily newspaper in Richmond with a Sunday circulation of 120,000, is owned by BH Media, a subsidiary of Warren Buffett's Berkshire Hathaway company. Style Weekly is a standard weekly publication covering popular culture, arts, and entertainment, owned by Landmark Communications. RVA Magazine is the city's only independent art music and culture publication, was once monthly, but is now issued quarterly. The Richmond Free Press and the Voice cover the news from an African-American perspective.

Question: What company owns the company that owns the Richmond Times-Dispatch?
Ans:
Berkshire Hathaway