Problem: Brain:

Another approach to brain function is to examine the consequences of damage to specific brain areas. Even though it is protected by the skull and meninges, surrounded by cerebrospinal fluid, and isolated from the bloodstream by the blood–brain barrier, the delicate nature of the brain makes it vulnerable to numerous diseases and several types of damage. In humans, the effects of strokes and other types of brain damage have been a key source of information about brain function. Because there is no ability to experimentally control the nature of the damage, however, this information is often difficult to interpret. In animal studies, most commonly involving rats, it is possible to use electrodes or locally injected chemicals to produce precise patterns of damage and then examine the consequences for behavior.

The brain is surrounded by what type of fluid?
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A: cerebrospinal fluid


Problem: High-definition television:

In 1949, France started its transmissions with an 819 lines system (with 737 active lines). The system was monochrome only, and was used only on VHF for the first French TV channel. It was discontinued in 1983.

When was France's 819 line system discontinued?
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A: 1983


Problem: Seattle:

Seattle is considered the home of grunge music, having produced artists such as Nirvana, Soundgarden, Alice in Chains, Pearl Jam, and Mudhoney, all of whom reached international audiences in the early 1990s. The city is also home to such varied artists as avant-garde jazz musicians Bill Frisell and Wayne Horvitz, hot jazz musician Glenn Crytzer, hip hop artists Sir Mix-a-Lot, Macklemore, Blue Scholars, and Shabazz Palaces, smooth jazz saxophonist Kenny G, classic rock staples Heart and Queensrÿche, and alternative rock bands such as Foo Fighters, Harvey Danger, The Presidents of the United States of America, The Posies, Modest Mouse, Band of Horses, Death Cab for Cutie, and Fleet Foxes. Rock musicians such as Jimi Hendrix, Duff McKagan, and Nikki Sixx spent their formative years in Seattle.

What style of music does Sir Mix-a-Lot and Macklemore represent in Seattle?
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A: hip hop


Problem: North Carolina:

North Carolina provides a large range of recreational activities, from swimming at the beach to skiing in the mountains. North Carolina offers fall colors, freshwater and saltwater fishing, hunting, birdwatching, agritourism, ATV trails, ballooning, rock climbing, biking, hiking, skiing, boating and sailing, camping, canoeing, caving (spelunking), gardens, and arboretums. North Carolina has theme parks, aquariums, museums, historic sites, lighthouses, elegant theaters, concert halls, and fine dining.

Fishing, hunting, and birdwatching are what kind of activities that are provided in North Carolina?
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A:
recreational