Question: By 1987, CBS was the only "big three" American TV network to have a co-owned record company. ABC had sold its record division to MCA Records in 1979, and in 1986, NBC's parent company RCA was sold to General Electric, who then sold off all other RCA units, including the record division (which was bought by Ariola Records, later known as BMG).
Try to answer this question if possible: By 1997, which network was the only "big three" to also have its own record company?
Answer: unanswerable
Question: Many instruments today associated with popular music filled important roles in early classical music, such as bagpipes, vihuelas, hurdy-gurdies, and some woodwind instruments. On the other hand, instruments such as the acoustic guitar, once associated mainly with popular music, gained prominence in classical music in the 19th and 20th centuries.
Try to answer this question if possible: In what did the bagpipe fill an important role?
Answer: early classical music,
Question: To minimize overall weight and size, miniature PM motors may use high energy magnets made with neodymium or other strategic elements; most such are neodymium-iron-boron alloy. With their higher flux density, electric machines with high-energy PMs are at least competitive with all optimally designed singly-fed synchronous and induction electric machines. Miniature motors resemble the structure in the illustration, except that they have at least three rotor poles (to ensure starting, regardless of rotor position) and their outer housing is a steel tube that magnetically links the exteriors of the curved field magnets.
Try to answer this question if possible: Why do large PM motors use high energy magnets?
Answer: unanswerable
Question: Cork City is at the heart of industry in the south of Ireland. Its main area of industry is pharmaceuticals, with Pfizer Inc. and Swiss company Novartis being big employers in the region. The most famous product of the Cork pharmaceutical industry is Viagra. Cork is also the European headquarters of Apple Inc. where over 3,000 staff are involved in manufacturing, R&D and customer support. Logitech and EMC Corporation are also important IT employers in the area. Three hospitals are also among the top ten employers in the city (see table below).
Try to answer this question if possible: What is the main industry in Europe?
Answer:
unanswerable