Input: Article: According to the 2010 revison of the UN World Population Prospects, Guinea-Bissau's population was 1,515,000 in 2010, compared to 518,000 in 1950. The proportion of the population below the age of 15 in 2010 was 41.3%, 55.4% were aged between 15 and 65 years of age, while 3.3% were aged 65 years or older.

Now answer this question: What is the source of the population data?

Output: the 2010 revison of the UN World Population Prospects

Input: Article: The state has two primary newspapers. The Oklahoman, based in Oklahoma City, is the largest newspaper in the state and 54th-largest in the nation by circulation, with a weekday readership of 138,493 and a Sunday readership of 202,690. The Tulsa World, the second most widely circulated newspaper in Oklahoma and 79th in the nation, holds a Sunday circulation of 132,969 and a weekday readership of 93,558. Oklahoma's first newspaper was established in 1844, called the Cherokee Advocate, and was written in both Cherokee and English. In 2006, there were more than 220 newspapers located in the state, including 177 with weekly publications and 48 with daily publications.

Now answer this question: What is the largest Oklahoma newspaper?

Output: The Oklahoman

Input: Article: General Frossard's II Corps and Marshal Bazaine's III Corps crossed the German border on 2 August, and began to force the Prussian 40th Regiment of the 16th Infantry Division from the town of Saarbrucken with a series of direct attacks. The Chassepot rifle proved its worth against the Dreyse rifle, with French riflemen regularly outdistancing their Prussian counterparts in the skirmishing around Saarbrucken. However the Prussians resisted strongly, and the French suffered 86 casualties to the Prussian 83 casualties. Saarbrucken also proved to be a major obstacle in terms of logistics. Only one railway there led to the German hinterland but could be easily defended by a single force, and the only river systems in the region ran along the border instead of inland. While the French hailed the invasion as the first step towards the Rhineland and later Berlin, General Le Buf and Napoleon III were receiving alarming reports from foreign news sources of Prussian and Bavarian armies massing to the southeast in addition to the forces to the north and northeast.

Now answer this question: How many casualties did the French suffer at Saarbrucken?

Output:
86 casualties