Problem: Canadian football:

Amateur football is governed by Football Canada. At the university level, 26 teams play in four conferences under the auspices of Canadian Interuniversity Sport; the CIS champion is awarded the Vanier Cup. Junior football is played by many after high school before joining the university ranks. There are 20 junior teams in three divisions in the Canadian Junior Football League competing for the Canadian Bowl. The Quebec Junior Football League includes teams from Ontario and Quebec who battle for the Manson Cup.

What are university ranks governed by?
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A: unanswerable


Problem: SC Bern is the major ice hockey team of Bern who plays at the PostFinance Arena. The team has ranked highest in attendance for a European hockey team for more than a decade. The PostFinance Arena was the main host of the 2009 IIHF Ice Hockey World Championship, including the opening game and the final of the tournament.
Where do they play?
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Answer: PostFinance Arena


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Archaeological finds suggest that the area has been inhabited since the stone age. Following the Roman invasion of Britain in AD 43 and the conquering of the local Britons in 70 AD the fortress settlement of Clausentum was established. It was an important trading port and defensive outpost of Winchester, at the site of modern Bitterne Manor. Clausentum was defended by a wall and two ditches and is thought to have contained a bath house. Clausentum was not abandoned until around 410.
What is the site of Clausentum called now?
A: Bitterne Manor


Context and question: Lasers emitting in the red region of the spectrum have been available since the invention of the ruby laser in 1960. In 1962 the red helium–neon laser was invented, and these two types of lasers were widely used in many scientific applications including holography, and in education. Red helium–neon lasers were used commercially in LaserDisc players. The use of red laser diodes became widespread with the commercial success of modern DVD players, which use a 660 nm laser diode technology. Today, red and red-orange laser diodes are widely available to the public in the form of extremely inexpensive laser pointers. Portable, high-powered versions are also available for various applications. More recently, 671 nm diode-pumped solid state (DPSS) lasers have been introduced to the market for all-DPSS laser display systems, particle image velocimetry, Raman spectroscopy, and holography.
What was invented in 1926?
Answer: unanswerable


Question: Ninety-five percent of bird species are socially monogamous. These species pair for at least the length of the breeding season or—in some cases—for several years or until the death of one mate. Monogamy allows for both paternal care and biparental care, which is especially important for species in which females require males' assistance for successful brood-rearing. Among many socially monogamous species, extra-pair copulation (infidelity) is common. Such behaviour typically occurs between dominant males and females paired with subordinate males, but may also be the result of forced copulation in ducks and other anatids. Female birds have sperm storage mechanisms that allow sperm from males to remain viable long after copulation, a hundred days in some species. Sperm from multiple males may compete through this mechanism. For females, possible benefits of extra-pair copulation include getting better genes for her offspring and insuring against the possibility of infertility in her mate. Males of species that engage in extra-pair copulations will closely guard their mates to ensure the parentage of the offspring that they raise.
Is there an answer to this question: What percent of bird species are socially monogamous?

Answer: Ninety-five percent


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Early HDTV commercial experiments, such as NHK's MUSE, required over four times the bandwidth of a standard-definition broadcast. Despite efforts made to reduce analog HDTV to about twice the bandwidth of SDTV, these television formats were still distributable only by satellite.
Despite the reduced bandwith, HDTV format still had to be distributed how?
A:
by satellite