Input: Read this: Even during the war, Eritrea developed its transportation infrastructure by asphalting new roads, improving its ports, and repairing war-damaged roads and bridges as a part of the Warsay Yika'alo Program. The most significant of these projects was the construction of a coastal highway of more than 500 km connecting Massawa with Asseb, as well as the rehabilitation of the Eritrean Railway. The rail line has been restored between the port of Massawa and the capital Asmara, although services are sporadic. Steam locomotives are sometimes used for groups of enthusiasts.
Question: What is the capital of Eritrea?

Output: Asmara

Input: Read this: In July 1973, Queen finally under a Trident/EMI deal released their eponymous debut album, an effort influenced by the heavy metal and progressive rock of the day. The album was received well by critics; Gordon Fletcher of Rolling Stone said "their debut album is superb", and Chicago's Daily Herald called it an "above average debut". It drew little mainstream attention, and the lead single "Keep Yourself Alive", a Brian May composition, sold poorly. Retrospectively, "Keep Yourself Alive" is cited as the highlight of the album, and in 2008 Rolling Stone ranked it 31st in the "100 Greatest Guitar Songs of All Time", describing it as "an entire album's worth of riffs crammed into a single song". The album was certified gold in the UK and the US.
Question: What was the name of Queen's first album?

Output: Queen

Input: Read this: After the end of the late Middle Ages period, the Renaissance would spread unevenly over continental Europe from the southern European region. The intellectual transformation of the Renaissance is viewed as a bridge between the Middle Ages and the Modern era. Europeans would later begin an era of world discovery. Combined with the influx of classical ideas was the invention of printing which facilitated dissemination of the printed word and democratized learning. These two things would lead to the Protestant Reformation. Europeans also discovered new trading routes, as was the case with Columbus's travel to the Americas in 1492, and Vasco da Gama's circumnavigation of Africa and India in 1498. Their discoveries strengthened the economy and power of European nations.
Question: What historical era isn't viewed as a bridge between the Middle Ages and the Modern Era?

Output: unanswerable

Input: Read this: The metal's distinctive natural green patina has long been coveted by architects and designers. The final patina is a particularly durable layer that is highly resistant to atmospheric corrosion, thereby protecting the underlying metal against further weathering. It can be a mixture of carbonate and sulfate compounds in various amounts, depending upon environmental conditions such as sulfur-containing acid rain. Architectural copper and its alloys can also be 'finished' to embark a particular look, feel, and/or color. Finishes include mechanical surface treatments, chemical coloring, and coatings.
Question: What conditions have no influence on the mixture of carbonate and sulfate in copper?

Output:
unanswerable