Problem: Vacuum:

Evaporation and sublimation into a vacuum is called outgassing. All materials, solid or liquid, have a small vapour pressure, and their outgassing becomes important when the vacuum pressure falls below this vapour pressure. In man-made systems, outgassing has the same effect as a leak and can limit the achievable vacuum. Outgassing products may condense on nearby colder surfaces, which can be troublesome if they obscure optical instruments or react with other materials. This is of great concern to space missions, where an obscured telescope or solar cell can ruin an expensive mission.

On what kind of surfaces can space missions happen?
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A: unanswerable


Problem: Classical music:

The Medieval period includes music from after the fall of Rome to about 1400. Monophonic chant, also called plainsong or Gregorian chant, was the dominant form until about 1100. Polyphonic (multi-voiced) music developed from monophonic chant throughout the late Middle Ages and into the Renaissance, including the more complex voicings of motets.

What can Plainsong or Gregorian chant also be called?
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A: Monophonic chant


Problem: Alaska:

Starting in 1982, dividends from the fund's annual growth have been paid out each year to eligible Alaskans, ranging from an initial $1,000 in 1982 (equal to three years' payout, as the distribution of payments was held up in a lawsuit over the distribution scheme) to $3,269 in 2008 (which included a one-time $1,200 "Resource Rebate"). Every year, the state legislature takes out 8% from the earnings, puts 3% back into the principal for inflation proofing, and the remaining 5% is distributed to all qualifying Alaskans. To qualify for the Permanent Fund Dividend, one must have lived in the state for a minimum of 12 months, maintain constant residency subject to allowable absences, and not be subject to court judgments or criminal convictions which fall under various disqualifying classifications or may subject the payment amount to civil garnishment.

When did disembursements from the Permanent Fund begin?
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A: 1982


Problem: Chicago Cubs:

On May 11, 2000, Glenallen Hill, facing Brewers starter Steve Woodard, became the first, and thus far only player, to hit a pitched ball onto the roof of a five-story residential building across Waveland Ave, beyond Wrigley Field's left field wall. The shot was estimated at well over 500 feet (150 m), but the Cubs fell to Milwaukee 12–8. No batted ball has ever hit the center field scoreboard, although the original "Slammin' Sammy", golfer Sam Snead, hit it with a golf ball in an exhibition in the 1950s. In 1948, Bill Nicholson barely missed the scoreboard when he launched a home run ball onto Sheffield Avenue and in 1959, Roberto Clemente came even closer with a home run ball hit onto Waveland Avenue. In 2001, a Sammy Sosa shot landed across Waveland and bounced a block down Kenmore Avenue. Dave Kingman hit a shot in 1979 that hit the third porch roof on the east side of Kenmore, estimated at 555 feet (169 m), and is regarded as the longest home run in Wrigley Field history. On May 26, 2015, the Cubs rookie third baseman, Kris Bryant, hit a homerun that traveled an estimated 477 feet (145 m) off the park's new videoboard in left field. Later the same year, he hit a homer that traveled 495 feet (151 m) that also ricocheted off of the videoboard On October 13, 2015, Kyle Schwarber's 438-foot home run landed on the equally new right field videoboard.

When did the first and only player to hit a pitched ball onto the roof of a five-story building across Waveland Ave?
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A:
May 11, 2000