Problem: Cetaceans were historically abundant around the island as commercial hunts on the island was operating until 1956. Today, numbers of larger whales have disappeared, but even today many species such humpback whale, minke whale, sei whale, and dolphins can be observed close to shores, and scientific surveys have been conducted regularly. Southern right whales were once regular migrants to the Norfolk hence naming the island as the "Middle ground" by whalers, but had been severely depleted by historical hunts, and further by illegal Soviet and Japan whaling, resulting in none of very few, if remnants still live, right whales in these regions along with Lord Howe Island.
What type of whales were once rare near Norfolk Island, but many exist today?
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Answer: unanswerable


Problem: Imperial College London is a public research university located in London, United Kingdom. It was founded by Prince Albert who envisioned an area composed of the Natural History Museum, Science Museum, Victoria and Albert Museum, Royal Albert Hall and the Imperial Institute. The Imperial Institute was opened by his wife, Queen Victoria, who laid the first stone. In 1907, Imperial College London was formed by Royal Charter, and soon joined the University of London, with a focus on science and technology. The college has expanded its coursework to medicine through mergers with St Mary's Hospital. In 2004, Queen Elizabeth II opened the Imperial College Business School. Imperial became an independent university from the University of London during its one hundred year anniversary.
When did the Imerial Institute join the University of London?
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Answer: unanswerable


Problem: After World War I the US Army started developing a dual-role (AA/ground) automatic 37 mm cannon, designed by John M. Browning. It was standardised in 1927 as the T9 AA cannon, but trials quickly revealed that it was worthless in the ground role. However, while the shell was a bit light (well under 2 lbs) it had a good effective ceiling and fired 125 rounds per minute; an AA carriage was developed and it entered service in 1939. The Browning 37mm proved prone to jamming, and was eventually replaced in AA units by the Bofors 40 mm. The Bofors had attracted attention from the US Navy, but none were acquired before 1939. Also, in 1931 the US Army worked on a mobile anti-aircraft machine mount on the back of a heavy truck having four .30 caliber water-cooled machine guns and an optical director. It proved unsuccessful and was abandoned.
What did the United States Army begin to develop after the first World War?
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Answer:
a dual-role (AA/ground) automatic 37 mm cannon