Input: Egypt
The Egyptians were one of the first major civilisations to codify design elements in art and architecture. Egyptian blue, also known as calcium copper silicate is a pigment used by Egyptians for thousands of years. It is considered to be the first synthetic pigment. The wall paintings done in the service of the Pharaohs followed a rigid code of visual rules and meanings. Egyptian civilisation is renowned for its colossal pyramids, temples and monumental tombs. Well-known examples are the Pyramid of Djoser designed by ancient architect and engineer Imhotep, the Sphinx, and the temple of Abu Simbel. Modern and contemporary Egyptian art can be as diverse as any works in the world art scene, from the vernacular architecture of Hassan Fathy and Ramses Wissa Wassef, to Mahmoud Mokhtar's sculptures, to the distinctive Coptic iconography of Isaac Fanous. The Cairo Opera House serves as the main performing arts venue in the Egyptian capital.

Who designed the Pyramid of Djoser?
Output: Imhotep

Input: Beer
The first historical mention of the use of hops in beer was from 822 AD in monastery rules written by Adalhard the Elder, also known as Adalard of Corbie, though the date normally given for widespread cultivation of hops for use in beer is the thirteenth century. Before the thirteenth century, and until the sixteenth century, during which hops took over as the dominant flavouring, beer was flavoured with other plants; for instance, grains of paradise or alehoof. Combinations of various aromatic herbs, berries, and even ingredients like wormwood would be combined into a mixture known as gruit and used as hops are now used. Some beers today, such as Fraoch' by the Scottish Heather Ales company and Cervoise Lancelot by the French Brasserie-Lancelot company, use plants other than hops for flavouring.

What would you call a mixture of ingredients used for brewing before the 16th century?
Output: gruit

Input: Railway electrification system
A railway electrification system supplies electric power to railway trains and trams without an on-board prime mover or local fuel supply. Electrification has many advantages but requires significant capital expenditure. Selection of an electrification system is based on economics of energy supply, maintenance, and capital cost compared to the revenue obtained for freight and passenger traffic. Different systems are used for urban and intercity areas; some electric locomotives can switch to different supply voltages to allow flexibility in operation.

What are two types of revenue obtained through railway transportation?
Output: freight and passenger traffic

Input: Glass
Most common glass contains other ingredients to change its properties. Lead glass or flint glass is more 'brilliant' because the increased refractive index causes noticeably more specular reflection and increased optical dispersion. Adding barium also increases the refractive index. Thorium oxide gives glass a high refractive index and low dispersion and was formerly used in producing high-quality lenses, but due to its radioactivity has been replaced by lanthanum oxide in modern eyeglasses.[citation needed] Iron can be incorporated into glass to absorb infrared energy, for example in heat absorbing filters for movie projectors, while cerium(IV) oxide can be used for glass that absorbs UV wavelengths.

What is another name for lead glass?
Output:
flint glass