Input: Russian language
Judging by the historical records, by approximately 1000 AD the predominant ethnic group over much of modern European Russia, Ukraine and Belarus was the Eastern branch of the Slavs, speaking a closely related group of dialects. The political unification of this region into Kievan Rus' in about 880, from which modern Russia, Ukraine and Belarus trace their origins, established Old East Slavic as a literary and commercial language. It was soon followed by the adoption of Christianity in 988 and the introduction of the South Slavic Old Church Slavonic as the liturgical and official language. Borrowings and calques from Byzantine Greek began to enter the Old East Slavic and spoken dialects at this time, which in their turn modified the Old Church Slavonic as well.

What countries did Kievan Rus' become?
Output: modern Russia, Ukraine and Belarus

Input: Crimean War
Winter, and a deteriorating supply situation on both sides of troops and materiel, led to a halt in ground operations. Sevastopol remained invested by the allies, while the allied armies were hemmed in by the Russian army in the interior. On 14 November a storm sank thirty allied transport ships including HMS Prince which was carrying a cargo of winter clothing.:435 The storm and heavy traffic caused the road from the coast to the troops to disintegrate into a quagmire, requiring engineers to devote most of their time to its repair including quarrying stone. A tramroad was ordered. It arrived in January with a civilian engineering crew, however it was March before it was sufficiently advanced to be of any appreciable value.:439 An Electrical telegraph was also ordered, but the frozen ground delayed its installation until March, when communications from the base port of Balaklava to the British HQ was established. The Pipe-and-cable-laying plough failed because of the hard frozen soil, but even so 21 miles of cable were laid.:449

What stopped ground operations during the winter?
Output: a deteriorating supply situation

Input: Alsace
During the First World War, to avoid ground fights between brothers, many Alsatians served as sailors in the Kaiserliche Marine and took part in the Naval mutinies that led to the abdication of the Kaiser in November 1918, which left Alsace-Lorraine without a nominal head of state. The sailors returned home and tried to found a republic. While Jacques Peirotes, at this time deputy at the Landrat Elsass-Lothringen and just elected mayor of Strasbourg, proclaimed the forfeiture of the German Empire and the advent of the French Republic, a self-proclaimed government of Alsace-Lorraine declared independence as the "Republic of Alsace-Lorraine". French troops entered Alsace less than two weeks later to quash the worker strikes and remove the newly established Soviets and revolutionaries from power. At the arrival of the French soldiers, many Alsatians and local Prussian/German administrators and bureaucrats cheered the re-establishment of order (which can be seen and is described in detail in the reference video below). Although U.S. President Woodrow Wilson had insisted that the région was self-ruling by legal status, as its constitution had stated it was bound to the sole authority of the Kaiser and not to the German state, France tolerated no plebiscite, as granted by the League of Nations to some eastern German territories at this time, because Alsatians were considered by the French public as fellow Frenchmen liberated from German rule. Germany ceded the region to France under the Treaty of Versailles.

What was the name of the treaty that allowed Germany to ceded the land to France?
Output: Treaty of Versailles

Input: Beyoncé
Beyoncé has worked with Pepsi since 2002, and in 2004 appeared in a Gladiator-themed commercial with Britney Spears, Pink, and Enrique Iglesias. In 2012, Beyoncé signed a $50 million deal to endorse Pepsi. The Center for Science in the Public Interest (CSPINET) wrote Beyoncé an open letter asking her to reconsider the deal because of the unhealthiness of the product and to donate the proceeds to a medical organisation. Nevertheless, NetBase found that Beyoncé's campaign was the most talked about endorsement in April 2013, with a 70 per cent positive audience response to the commercial and print ads.

Which organization wrote a letter to Beyonce after her Pepsi endorsement deal?
Output:
The Center for Science in the Public Interest (CSPINET)