Input: Nigeria
The name Nigeria was taken from the Niger River running through the country. This name was allegedly coined in the late 19th century by British journalist Flora Shaw, she was inspired by the name of the river, in preference to terms such as "Central Sudan". The origin of the name ''Nigeria'' came from the name of the Niger River. The word ( Niger )  is an alteration of the Tuareg name egerew n-igerewen used by inhabitants along the middle reaches of the river around Timbuktu prior to 19th-century European colonialism. Egerew n-igerewen means River of the Rivers.

Which river reaches Timbuktu?
Output: Niger

Input: Saint Helena
Saint Helena has the international calling code +290 which, since 2006, Tristan da Cunha shares. Saint Helena telephone numbers changed from 4 to 5 digits on 1 October 2013 by being prefixed with the digit "2", i.e. 2xxxx, with the range 5xxxx being reserved for mobile numbering, and 8xxx being used for Tristan da Cunha numbers (these still shown as 4 digits).

How many digits did Saint Helena change their phone numbers to?
Output: 5

Input: St. John%27s, Newfoundland and Labrador
Starting as a fishing outpost for European fishermen, St. John's consisted mostly of the homes of fishermen, sheds, storage shacks, and wharves constructed out of wood. Like many other cities of the time, as the Industrial Revolution took hold and new methods and materials for construction were introduced, the landscape changed as the city grew in width and height. The Great Fire of 1892 destroyed most of the downtown core, and most residential and other wood-frame buildings date from this period.

In what year was the Great Fire?
Output: 1892

Input: Korean War
By August, the KPA had pushed back the ROK Army and the Eighth United States Army to the vicinity of Pusan in southeast Korea. In their southward advance, the KPA purged the Republic of Korea's intelligentsia by killing civil servants and intellectuals. On 20 August, General MacArthur warned North Korean leader Kim Il-sung that he was responsible for the KPA's atrocities. By September, the UN Command controlled the Pusan perimeter, enclosing about 10% of Korea, in a line partially defined by the Nakdong River.

How much of Korea was under the control of the United Nations?
Output:
10%