Problem: In 1665, Bremen refused to pledge allegiance to Charles X Gustav's successor, Charles XI of Sweden. In March, the Swedish riksråd decided to wage war. Thereupon, 12,000 Swedish troops were transferred to the Duchy of Bremen by the end of the year. In January 1666, Carl Gustaf Wrangel departed from Swedish Pomerania to command the Swedish army, which in early 1666 numbered 14,000 troops. By summer, all of the city of Bremen's territory was occupied, except the city itself. The Swedish chancellor of Bremen-Verden, Esaias von Pufendorf, went to the court in Paris to build an alliance with France. The Swedish position was that France had to intervene on the Swedish side, since Bremen was Swedish according to the Peace of Westphalia, of which France was a guarantor. Pufendorf was however told by Hugues de Lionne that France would not hesitate to declare openly that she read the treaty as Bremen being an Imperial city, rather than provoke a new great war with the Holy Roman Empire and the Dutch Republic with an assault Sweden and France could hardly win. Lionne said Sweden would be better off waiting for a situation when the Dutch and the neighboring German principalities were weak, and then take the city of Bremen by surprise.
Answer this question based on the article: How many years did these events span?
A: 1

Problem: When Sigurd died in 1130, Harald broke his oath. Sigurd's son Magnus was proclaimed king, but Harald also claimed the royal title, and received much support. A settlement was reached whereby Magnus and Harald would both be kings and co-rulers. Peace between them lasted until 1134, when open war broke out. In 1135 Harald succeeded in defeating and capturing Magnus in Bergen. Magnus was blinded, castrated, mutilated and imprisoned in a monastery. He was thereafter known as Magnus the Blind. At about the same time Sigurd Slembe, another man from Iceland, arrived claiming to be a son of Magnus Barefoot. He claimed to have gone through an ordeal by fire in Denmark to prove his claim. Harald did not recognize him as his half-brother. In 1136 Sigurd murdered Harald in his sleep in Bergen, and had himself proclaimed king. Harald's supporters would not accept him and had Harald's two infant sons, Sigurd Munn and Inge Crouchback, named king. Sigurd Slembe liberated Magnus the Blind from his enforced monastic life and allied himself with him. The war between Sigurd Slembe and Magnus the Blind on the one side, and Harald Gille's old supporters with his young sons on the other, dragged on until 1139, when Magnus and Sigurd were defeated in Battle of Holmengrå fought near Hvaler. Magnus was killed in the battle, Sigurd was captured and tortured to death.
Answer this question based on the article: How many people claimed to be king after Sigurd's death?
A: 2

Problem: Samuel Pufendorf (1632-1694) was a notable jurist and philosopher known for his natural law theories, influencing Adam Smith  as well as Thomas Jefferson. Olof von Dalin (1708-1763) was an influential Swedish writer and historian of the late Age of Enlightenment. Peter Wieselgren (1800-1877) was a Swedish priest, literature critic and prominent leader of the Swedish temperance movements. Knut Wicksell (1851-1926) was an influential economist, sometimes considered one of the founders of modern macroeconomics. Oscar Olsson (1877-1950) was an important developer of self-education in Sweden and known as the father of study circles. Bertil Ohlin (1899-1979) received the Nobel Memorial Prize in Economic Sciences in 1977 for theories concerning international trade and capital, and was the leader of the Liberals Peoples Party (Liberals (Sweden)) for 23 years. Gunnar Jarring (1907-2002) was Swedens ambassador in UN 1956-1958, and Swedens ambassador in Washington, D.C. 1958-1964. Britta Holmström (1911-1992) was the founder of Individuell Människohjälp (IM), a human rights organization with activities in 12 countries. Torsten Hägerstrand (1916-2004) was an internationally renowned geographer, considered the father of time geography and receiver of the Vautrin Lud Prize in 1992. Judith Wallerstein (1921-2012) was a renowned psychologist and internationally recognized authority on the effects of marriage and divorce on children and their parents.
Answer this question based on the article: How many years was Gunnar Jarring an ambassador for Sweden in total?
A:
8