Problem: Gymnastics:

In the vaulting events, gymnasts sprint down a 25 metres (82 ft) runway, jump onto a spring filled board or perform a roundoff, or handspring entry onto a springboard (run/ take-off segment), land momentarily, inverted on the hands on the vaulting horse, or vaulting table (pre flight segment), then propel themselves forward or backward, off of this platform to a two footed landing (post flight segment). Every gymnast starts at a different point on the vault runway depending on their height and strength. The post flight segment may include one or more multiple saltos or somersaults, and/or twisting movements. A round-off entry vault, called a Yurchenko, is the most common vault in elite level gymnastics. When performing a yurchenko, gymnasts "round-off" so hands are on the runway while the feet land on the springboard (beatboard). From the roundoff position the gymnast travels backwards and executes a backhandspring so that the hands land on the vaulting table. The gymnast then blocks off the vaulting platform into various twisting and/or somersaulting combinations. The post flight segment brings the gymnast to her feet.

What is a round-off entry vault called?
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A: Yurchenko

Problem: Florida:

As of 2010, those of Hispanic or Latino ancestry ancestry accounted for 22.5% (4,223,806) of Florida's population. Out of the 22.5%, the largest groups were 6.5% (1,213,438) Cuban, 4.5% (847,550) Puerto Rican, 3.3% (629,718) Mexican, and 1.6% (300,414) Colombian. Florida's Hispanic population includes large communities of Cuban Americans in Miami and Tampa, Puerto Ricans in Orlando and Tampa, and Mexican/Central American migrant workers. The Hispanic community continues to grow more affluent and mobile. As of 2011, 57.0% of Florida's children under the age of 1 belonged to minority groups. Florida has a large and diverse Hispanic population, with Cubans and Puerto Ricans being the largest groups in the state. Nearly 80% of Cuban Americans live in Florida, especially South Florida where there is a long-standing and affluent Cuban community. Florida has the second largest Puerto Rican population after New York, as well as the fastest-growing in the nation. Puerto Ricans are more widespread throughout the state, though the heaviest concentrations are in the Orlando area of Central Florida.

What origin makes up the smallest population of hispanics in florida?
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A: unanswerable

Problem: Solar energy:

In the last two decades, photovoltaics (PV), also known as solar PV, has evolved from a pure niche market of small scale applications towards becoming a mainstream electricity source. A solar cell is a device that converts light directly into electricity using the photoelectric effect. The first solar cell was constructed by Charles Fritts in the 1880s. In 1931 a German engineer, Dr Bruno Lange, developed a photo cell using silver selenide in place of copper oxide. Although the prototype selenium cells converted less than 1% of incident light into electricity, both Ernst Werner von Siemens and James Clerk Maxwell recognized the importance of this discovery. Following the work of Russell Ohl in the 1940s, researchers Gerald Pearson, Calvin Fuller and Daryl Chapin created the crystalline silicon solar cell in 1954. These early solar cells cost 286 USD/watt and reached efficiencies of 4.56%. By 2012 available efficiencies exceed 20% and the maximum efficiency of research photovoltaics is over 40%.

Who created the first solar cell?
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A: Charles Fritts

Problem: University of Notre Dame:

The library system of the university is divided between the main library and each of the colleges and schools. The main building is the 14-story Theodore M. Hesburgh Library, completed in 1963, which is the third building to house the main collection of books. The front of the library is adorned with the Word of Life mural designed by artist Millard Sheets. This mural is popularly known as "Touchdown Jesus" because of its proximity to Notre Dame Stadium and Jesus' arms appearing to make the signal for a touchdown.

In what year was the Theodore M. Hesburgh Library at Notre Dame finished?
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A:
1963