Problem: Oklahoma:

In descending order of population, Oklahoma's largest cities in 2010 were: Oklahoma City (579,999, +14.6%), Tulsa (391,906, 0.3%), Norman (110,925, +15.9%), Broken Arrow (98,850, +32.0%), Lawton (96,867, +4.4%), Edmond (81,405, +19.2%), Moore (55,081, +33.9%), Midwest City (54,371, +0.5%), Enid (49,379, +5.0%), and Stillwater (45,688, +17.0%). Of the state's ten largest cities, three are outside the metropolitan areas of Oklahoma City and Tulsa, and only Lawton has a metropolitan statistical area of its own as designated by the United States Census Bureau, though the metropolitan statistical area of Fort Smith, Arkansas extends into the state.

What Arkansas city's metro area extends into Oklahoma?
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A: Fort Smith

Problem: European Central Bank:

There is also a widespread view[vague][who?] that giving much more financial support to continuously cover the debt crisis or allow even higher budget deficits or debt levels would discourage the crisis states to implement necessary reforms to regain their competitiveness.[citation needed] There has also been a reluctance[citation needed] of financially stable eurozone states like Germany[citation needed] to further circumvent the no-bailout clause in the EU contracts and to generally take on the burden of financing or guaranteeing the debts of financially unstable or defaulting eurozone countries.[citation needed]

What contracts do not contain a no-bailout clause?
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A: unanswerable

Problem: Westminster Abbey:

Inner and outer vestibules lead to the octagonal chapter house, which is of exceptional architectural purity. It is built in a Geometrical Gothic style with an octagonal crypt below. A pier of eight shafts carries the vaulted ceiling. To the sides are blind arcading, remains of 14th-century paintings and numerous stone benches above which are innovatory large 4-light quatre-foiled windows. These are virtually contemporary with the Sainte-Chapelle, Paris.

What style is the octagonal chapel house?
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A: unanswerable

Problem: Antenna (radio):

Loop antennas consist of a loop or coil of wire. Loops with circumference of a wavelength or larger act similarly to dipole antennas. However loops small in comparison to a wavelength act differently. They interact with the magnetic field of the radio wave instead of the electric field as other antennas do, and so are relatively insensitive to nearby electrical noise. However they have low radiation resistance, and so are inefficient for transmitting. They are used as receiving antennas at low frequencies, and also as direction finding antennas.

What is a loop antenna compared with to determine its beahvior?
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A:
circumference of a wavelength