Input: Roman Republic
The last king of the Roman Kingdom, Lucius Tarquinius Superbus, was overthrown in 509 BC by a group of noblemen led by Lucius Junius Brutus. Tarquin made a number of attempts to retake the throne, including the Tarquinian conspiracy, the war with Veii and Tarquinii and finally the war between Rome and Clusium, all of which failed to achieve Tarquin's objectives. The most important constitutional change during the transition from kingdom to republic concerned the chief magistrate. Before the revolution, a king would be elected by the senators for a life term. Now, two consuls were elected by the citizens for an annual term. Each consul would check his colleague, and their limited term in office would open them up to prosecution if they abused the powers of their office. Consular political powers, when exercised conjointly with a consular colleague, were no different from those of the old king.

What was the length of a term that a king would be elected for in the Roman Kingdom?
Output: life term

Input: Glass
In physics, the standard definition of a glass (or vitreous solid) is a solid formed by rapid melt quenching. The term glass is often used to describe any amorphous solid that exhibits a glass transition temperature Tg. If the cooling is sufficiently rapid (relative to the characteristic crystallization time) then crystallization is prevented and instead the disordered atomic configuration of the supercooled liquid is frozen into the solid state at Tg. The tendency for a material to form a glass while quenched is called glass-forming ability. This ability can be predicted by the rigidity theory. Generally, the structure of a glass exists in a metastable state with respect to its crystalline form, although in certain circumstances, for example in atactic polymers, there is no crystalline analogue of the amorphous phase.

What predicts glass-forming ability?
Output: rigidity theory

Input: Mandolin
The instrument was primarily used in an ensemble setting well into the 1930s, and although the fad died out at the beginning of the 1930s, the instruments that were developed for the orchestra found a new home in bluegrass. The famous Lloyd Loar Master Model from Gibson (1923) was designed to boost the flagging interest in mandolin ensembles, with little success. However, The "Loar" became the defining instrument of bluegrass music when Bill Monroe purchased F-5 S/N 73987 in a Florida barbershop in 1943 and popularized it as his main instrument.

What mandolin was designed to boost interest in the mandolin?
Output: Lloyd Loar Master Model from Gibson

Input: Frederic Chopin
Chopin's music remains very popular and is regularly performed, recorded and broadcast worldwide. The world's oldest monographic music competition, the International Chopin Piano Competition, founded in 1927, is held every five years in Warsaw. The Fryderyk Chopin Institute of Poland lists on its website over eighty societies world-wide devoted to the composer and his music. The Institute site also lists nearly 1,500 performances of Chopin works on YouTube as of January 2014.

How often is the International Chopin Piano Competition held?
Output:
every five years