Input: Read this: Many, if not most, birds migrate in flocks. For larger birds, flying in flocks reduces the energy cost. Geese in a V-formation may conserve 1220% of the energy they would need to fly alone. Red knots Calidris canutus and dunlins Calidris alpina were found in radar studies to fly 5 km/h (3.1 mph) faster in flocks than when they were flying alone.
Question: What does flying in flocks reduce?

Output: energy cost

Input: Read this: With characteristic energy he set to work to re-establish the somewhat shattered fortunes of the orthodox party and to purge the theological atmosphere of uncertainty. To clear up the misunderstandings that had arisen in the course of the previous years, an attempt was made to determine still further the significance of the Nicene formularies. In the meanwhile, Julian, who seems to have become suddenly jealous of the influence that Athanasius was exercising at Alexandria, addressed an order to Ecdicius, the Prefect of Egypt, peremptorily commanding the expulsion of the restored primate, on the ground that he had never been included in the imperial act of clemency. The edict was communicated to the bishop by Pythicodorus Trico, who, though described in the "Chronicon Athanasianum" (XXXV) as a "philosopher", seems to have behaved with brutal insolence. On 23 October the people gathered about the proscribed bishop to protest against the emperor's decree; but Athanasius urged them to submit, consoling them with the promise that his absence would be of short duration.
Question: Did he think he would be gone a long time?

Output: short duration

Input: Read this: The population of Paris in its administrative city limits was 2,241,346 in January 2014. This makes Paris the fifth largest municipality in the European Union, following London, Berlin, Madrid and Rome. Eurostat, the statistical agency of the EU, places Paris (6.5 million people) second behind London (8 million) and ahead of Berlin (3.5 million), based on the 2012 populations of what Eurostat calls "urban audit core cities". The Paris Urban Area, or "unite urbaine", is a statistical area created by the French statistical agency INSEE to measure the population of built-up areas around the city. It is slightly smaller than the Paris Region. According to INSEE, the Paris Urban Area had a population of 10,550,350 at the January 2012 census, the most populous in the European Union, and third most populous in Europe, behind Istanbul and Moscow. The Paris Metropolitan Area is the second most populous in the European Union after London with a population of 12,341,418 at the Jan. 2012 census.
Question: In Janurary of 2014, what was the population of Paris' city limits?

Output: 2,241,346

Input: Read this: As a member of the European Union, Estonia is considered a high-income economy by the World Bank. The GDP (PPP) per capita of the country, a good indicator of wealth, was in 2015 $28,781 according to the IMF, between that of Slovak Republic and Lithuania, but below that of other long-time EU members such as Italy or Spain. The country is ranked 8th in the 2015 Index of Economic Freedom, and the 4th freest economy in Europe. Because of its rapid growth, Estonia has often been described as a Baltic Tiger beside Lithuania and Latvia. Beginning 1 January 2011, Estonia adopted the euro and became the 17th eurozone member state.
Question: What institution views the economy of Estonia as high income?

Output:
the World Bank