Input: Read this: To accommodate the ruling in Hopwood v. Texas banning any use of race in school admissions, the State of Texas passed a law guaranteeing entry to any state university if a student finished in the top 10% of their graduating class. Florida and California have also replaced racial quotas with class rank and other criteria. Class rank tends to benefit top students at less competitive high schools, to the detriment of students at more competitive high schools. This effect, however, may be intentional since less-funded, less competitive schools are more likely to be schools where minority enrollment is high. Critics argue that class rank is more a measure of one's peers than of one's self. The top 10% rule adds racial diversity only because schools are still highly racially segregated because of residential patterns. The class rank rule has the same consequence as traditional affirmative action: opening schools to students who would otherwise not be admitted had the given school used a holistic, merit-based approach. From 1996 to 1998, Texas had merit-based admission to its state universities, and minority enrollment dropped. The state's adoption of the "top 10 percent" rule returned minority enrollment to pre-1996 levels.
Question: What is one example of what racial quotas were not replaced with?

Output: unanswerable

Input: Read this: Tennessee is home to several Protestant denominations, such as the National Baptist Convention (headquartered in Nashville); the Church of God in Christ and the Cumberland Presbyterian Church (both headquartered in Memphis); the Church of God and The Church of God of Prophecy (both headquartered in Cleveland). The Free Will Baptist denomination is headquartered in Antioch; its main Bible college is in Nashville. The Southern Baptist Convention maintains its general headquarters in Nashville. Publishing houses of several denominations are located in Nashville.
Question: Which two major Protestant denominations are based in Memphis?

Output: Church of God in Christ and the Cumberland Presbyterian Church

Input: Read this: Since the 19th century, many if not all presidents were assisted by a central figure or "gatekeeper", sometimes described as the President's Private Secretary, sometimes with no official title at all. Eisenhower formalized this role, introducing the office of White House Chief of Staff an idea he borrowed from the United States Army. Every president after Lyndon Johnson has also appointed staff to this position. Initially, Gerald Ford and Jimmy Carter tried to operate without a chief of staff, but each eventually appointed one.
Question: From where did Eisenhower get the idea of a White House Chief of Staff?

Output: United States Army

Input: Read this: The armillary sphere, a three-dimensional representation of the movements in the celestial sphere, was invented in Han China by the 1st century BC. Using a water clock, waterwheel and a series of gears, the Court Astronomer Zhang Heng (78139 AD) was able to mechanically rotate his metal-ringed armillary sphere. To address the problem of slowed timekeeping in the pressure head of the inflow water clock, Zhang was the first in China to install an additional tank between the reservoir and inflow vessel. Zhang also invented a seismometer (Houfeng didong yi ) in 132 AD to detect the exact cardinal or ordinal direction of earthquakes from hundreds of kilometers away. This employed an inverted pendulum that, when disturbed by ground tremors, would trigger a set of gears that dropped a metal ball from one of eight dragon mouths (representing all eight directions) into a metal toad's mouth.
Question: What was exchanged from mouth to mouth in the usage of the seismometer?

Output:
metal ball