Problem: Copper:

Together with caesium and gold (both yellow), and osmium (bluish), copper is one of only four elemental metals with a natural color other than gray or silver. Pure copper is orange-red and acquires a reddish tarnish when exposed to air. The characteristic color of copper results from the electronic transitions between the filled 3d and half-empty 4s atomic shells the energy difference between these shells is such that it corresponds to orange light. The same mechanism accounts for the yellow color of gold and caesium.

How many grains of sand have a natural color that isn't gray?
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A: unanswerable

Problem: Madonna (entertainer):

In mid-2004 Madonna embarked on the Re-Invention World Tour in the U.S., Canada, and Europe. It became the highest-grossing tour of 2004, earning around $120 million and became the subject of her documentary I'm Going to Tell You a Secret. In November 2004, she was inducted into the UK Music Hall of Fame as one of its five founding members, along with The Beatles, Elvis Presley, Bob Marley, and U2. In January 2005, Madonna performed a cover version of the John Lennon song "Imagine" at Tsunami Aid. She also performed at the Live 8 benefit concert in London in July 2005.

When was the Re-Invention World Tour kick off?
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A: mid-2004

Problem: Premier League:

Despite significant European success during the 1970s and early 1980s, the late '80s had marked a low point for English football. Stadiums were crumbling, supporters endured poor facilities, hooliganism was rife, and English clubs were banned from European competition for five years following the Heysel Stadium disaster in 1985. The Football League First Division, which had been the top level of English football since 1888, was well behind leagues such as Italy's Serie A and Spain's La Liga in attendances and revenues, and several top English players had moved abroad.

What did English players do after the ban?
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A: moved abroad

Problem: Political party:

The freedom to form, declare membership in, or campaign for candidates from a political party is considered a measurement of a state's adherence to liberal democracy as a political value. Regulation of parties may run from a crackdown on or repression of all opposition parties, a norm for authoritarian governments, to the repression of certain parties which hold or promote ideals which run counter to the general ideology of the state's incumbents (or possess membership by-laws which are legally unenforceable).

What is considered a measurement of a state's support to liberal democracy?
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A:
The freedom to form, declare membership in, or campaign for