Problem: Mexico City:

Other popular sites for pop-artist performances include the 3,000-seat Teatro Metropolitan, the 15,000-seat Palacio de los Deportes, and the larger 50,000-seat Foro Sol Stadium, where popular international artists perform on a regular basis. The Cirque du Soleil has held several seasons at the Carpa Santa Fe, in the Santa Fe district in the western part of the city. There are numerous venues for smaller musical ensembles and solo performers. These include the Hard Rock Live, Bataclan, Foro Scotiabank, Lunario, Circo Volador and Voila Acoustique. Recent additions include the 20,000-seat Arena Ciudad de Mexico, the 3,000-seat Pepsi Center World Trade Center, and the 2,500-seat Auditorio Blackberry.

The Foro Sol Stadium hols how many people?
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A: 50,000

Problem: Mandolin:

A mandolin (Italian: mandolino pronounced [mandolino]; literally "small mandola") is a musical instrument in the lute family and is usually plucked with a plectrum or "pick". It commonly has four courses of doubled metal strings tuned in unison (8 strings), although five (10 strings) and six (12 strings) course versions also exist. The courses are normally tuned in a succession of perfect fifths. It is the soprano member of a family that includes the mandola, octave mandolin, mandocello and mandobass.

What material is the lute's strings made of?
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A: unanswerable

Problem: Beyonce:

At the 57th Annual Grammy Awards in February 2015, Beyonce was nominated for six awards, ultimately winning three: Best R&B Performance and Best R&B Song for "Drunk in Love", and Best Surround Sound Album for Beyonce. She was nominated for Album of the Year but the award was won by Beck for his Morning Phase album. In August, the cover of the September issue of Vogue magazine was unveiled online, Beyonce as the cover star, becoming the first African-American artist and third African-American woman in general to cover the September issue. She headlined the 2015 Made in America festival in early September and also the Global Citizen Festival later that month. Beyonce made an uncredited featured appearance on the track "Hymn for the Weekend" by British rock band Coldplay, on their seventh studio album A Head Full of Dreams (2015), which saw release in December. On January 7, 2016, Pepsi announced Beyonce would perform alongside Coldplay at Super Bowl 50 in February. Knowles has previously performed at four Super Bowl shows throughout her career, serving as the main headliner of the 47th Super Bowl halftime show in 2013.

Beyonce would perform with who at Superbowl 50?
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A: Coldplay

Problem: Race and ethnicity in the United States Census:

In September 1997, during the process of revision of racial categories previously declared by OMB directive no. 15, the American Anthropological Association (AAA) recommended that OMB combine the "race" and "ethnicity" categories into one question to appear as "race/ethnicity" for the 2000 US Census. The Interagency Committee agreed, stating that "race" and "ethnicity" were not sufficiently defined and "that many respondents conceptualize 'race' and 'ethnicity' as one in the same [sic] underscor[ing] the need to consolidate these terms into one category, using a term that is more meaningful to the American people."

How did racial categories appear in the US 2000 census?
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A:
race/ethnicity