Problem: Hunter-gatherer:

Hunting and gathering was presumably the subsistence strategy employed by human societies beginning some 1.8 million years ago, by Homo erectus, and from its appearance some 0.2 million years ago by Homo sapiens. It remained the only mode of subsistence until the end of the Mesolithic period some 10,000 years ago, and after this was replaced only gradually with the spread of the Neolithic Revolution.

When did hunting-gathering begin to fade from use?
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A: 10,000 years ago

Problem: Kanye West:

In August 2008, West revealed plans to open 10 Fatburger restaurants in the Chicago area; the first was set to open in September 2008 in Orland Park. The second followed in January 2009, while a third location is yet to be revealed, although the process is being finalized. His company, KW Foods LLC, bought the rights to the chain in Chicago. Ultimately, in 2009, only two locations actually opened. In February 2011, West shut down the Fatburger located in Orland Park. Later that year, the remaining Beverly location also was shuttered.

What was the name of the restaurant Kanye annouced he was opening?
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A: Fatburger

Problem: Labour Party (UK):

Callaghan had been widely expected to call a general election in the autumn of 1978 when most opinion polls showed Labour to have a narrow lead. However he decided to extend his wage restraint policy for another year hoping that the economy would be in a better shape for a 1979 election. But during the winter of 197879 there were widespread strikes among lorry drivers, railway workers, car workers and local government and hospital workers in favour of higher pay-rises that caused significant disruption to everyday life. These events came to be dubbed the "Winter of Discontent".

Who did no one expect to call for a general election?
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A: unanswerable

Problem: Chihuahua (state):

In the far eastern part of the state the Chihuahuan Desert dominates due to low precipitation and extremely high temperatures; some areas of the eastern part of the state are so dry no vegetation is found like the Sand Dunes of Samalayuca. There are two distinctive climate zones found in the eastern part of the state: Hot Desert (BWh) and Cool Desert (BWk) which are differentiated by average annual temperature due to differences in elevation. There is a transition zone in the middle of the state between the two extremely different climates from the east and west; this zone is the Steppe characterized by a compromise between juxtaposed climate zones.

Both types of climate zones in the eastern part of the state are what?
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A:
Desert