Question: Although provision is made in Title 10 of the United States Code for the Secretary of the Air Force to appoint warrant officers, the Air Force does not currently use warrant officer grades, and is the only one of the U.S. Armed Services not to do so. The Air Force inherited warrant officer ranks from the Army at its inception in 1947, but their place in the Air Force structure was never made clear.[citation needed] When the Congress authorized the creation of two new senior enlisted ranks in 1958, Air Force officials privately concluded that these two new "super grades" could fill all Air Force needs then performed at the warrant officer level, although this was not publicly acknowledged until years later.[citation needed] The Air Force stopped appointing warrant officers in 1959, the same year the first promotions were made to the new top enlisted grade, Chief Master Sergeant. Most of the existing Air Force warrant officers entered the commissioned officer ranks during the 1960s, but small numbers continued to exist in the warrant officer grades for the next 21 years.
Try to answer this question if possible: When did Congress authorize the creation of two new senior officer grades?
Answer: 1958
Question: Leptons (the most famous being the electron), and quarks (of which baryons, such as protons and neutrons, are made) combine to form atoms, which in turn form molecules. Because atoms and molecules are said to be matter, it is natural to phrase the definition as: ordinary matter is anything that is made of the same things that atoms and molecules are made of. (However, notice that one also can make from these building blocks matter that is not atoms or molecules.) Then, because electrons are leptons, and protons, and neutrons are made of quarks, this definition in turn leads to the definition of matter as being quarks and leptons, which are the two types of elementary fermions. Carithers and Grannis state: Ordinary matter is composed entirely of first-generation particles, namely the [up] and [down] quarks, plus the electron and its neutrino. (Higher generations particles quickly decay into first-generation particles, and thus are not commonly encountered.)
Try to answer this question if possible: How many generation particles are there?
Answer: unanswerable
Question: Balansiyya had a rebirth of sorts with the beginning of the Taifa of Valencia kingdom in the 11th century. The town grew, and during the reign of Abd al-Aziz a new city wall was built, remains of which are preserved throughout the Old City (Ciutat Vella) today. The Castilian nobleman Rodrigo Diaz de Vivar, known as El Cid, who was intent on possessing his own principality on the Mediterranean, entered the province in command of a combined Christian and Moorish army and besieged the city beginning in 1092. By the time the siege ended in May 1094, he had carved out his own fiefdomwhich he ruled from 15 June 1094 to July 1099. This victory was immortalised in the Lay of the Cid. During his rule, he converted nine mosques into churches and installed the French monk Jerome as bishop of the See of Valencia. El Cid was killed in July 1099 while defending the city from an Almoravid siege, whereupon his wife Ximena Diaz ruled in his place for two years.
Try to answer this question if possible: When did El Cid rule?
Answer: 15 June 1094 to July 1099
Question: The aircraft carrier dramatically changed naval combat in World War II, because air power was becoming a significant factor in warfare. The advent of aircraft as focal weapons was driven by the superior range, flexibility and effectiveness of carrier-launched aircraft. They had higher range and precision than naval guns, making them highly effective. The versatility of the carrier was demonstrated in November 1940 when HMS Illustrious launched a long-range strike on the Italian fleet at their base in Taranto, signalling the beginning of the effective and highly mobile aircraft strikes. This operation incapacitated three of the six battleships at a cost of two torpedo bombers. World War II in the Pacific Ocean involved clashes between aircraft carrier fleets. The 1941 Japanese surprise attack on Pearl Harbor was a clear illustration of the power projection capability afforded by a large force of modern carriers. Concentrating six carriers in a single unit turned naval history about, as no other nation had fielded anything comparable. However, the vulnerability of carriers compared to traditional battleships when forced into a gun-range encounter was quickly illustrated by the sinking of HMS Glorious by German battleships during the Norwegian campaign in 1940.
Try to answer this question if possible: What was signalled in 1940 when HMS Illustrious launched an strike on an Italian fleet?
Answer:
the beginning of the effective and highly mobile aircraft strikes