Input: Read this: As of 1878, there were only three free Slavic states in the world: the Russian Empire, Serbia and Montenegro. Bulgaria was also free but was de jure vassal to the Ottoman Empire until official independence was declared in 1908. In the entire Austro-Hungarian Empire of approximately 50 million people, about 23 million were Slavs. The Slavic peoples who were, for the most part, denied a voice in the affairs of the Austro-Hungarian Empire, were calling for national self-determination. During World War I, representatives of the Czechs, Slovaks, Poles, Serbs, Croats, and Slovenes set up organizations in the Allied countries to gain sympathy and recognition. In 1918, after World War I ended, the Slavs established such independent states as Czechoslovakia, the Second Polish Republic, and the State of Slovenes, Croats and Serbs.
Question: What was Serbia de jure vassal to in 1878?

Output: unanswerable

Input: Read this: Nigeria gained independence from the United Kingdom as a Commonwealth Realm on 1 October 1960. Nigeria's government was a coalition of conservative parties: the Nigerian People's Congress (NPC), a party dominated by Northerners and those of the Islamic faith, and the Igbo and Christian-dominated National Council of Nigeria and the Cameroons (NCNC) led by Nnamdi Azikiwe. Azikiwe became Nigeria's maiden Governor-General in 1960. The opposition comprised the comparatively liberal Action Group (AG), which was largely dominated by the Yoruba and led by Obafemi Awolowo. The cultural and political differences between Nigeria's dominant ethnic groups the Hausa ('Northerners'), Igbo ('Easterners') and Yoruba ('Westerners') were sharp.
Question: What was Nigeria's status after independence from the UK?

Output: a Commonwealth Realm

Input: Read this: As the image of God grows within man, he learns to rely less on an intellectual pursuit of virtue and more on an affective pursuit of charity and meekness. Meekness and charity guide Christians to acknowledge that they are nothing without the One (God/Christ) who created them, sustains them, and guides them. Thus, man then directs his path to that One, and the love for, and of, Christ guides man's very nature to become centered on the One, and on his neighbor as well. Charity is the manifestation of the pure love of Christ, both for and by His follower.
Question: Who did not create, sustain, or guide man?

Output: unanswerable

Input: Read this: The City Council (Gemeinderat) constitutes the executive government of the City of Bern and operates as a collegiate authority. It is composed of five councilors (German: Gemeinderat/-ratin), each presiding over a directorate (Direktion) comprising several departments and bureaus. The president of the executive department acts as mayor (Stadtprasident). In the mandate period 20132016 (Legislatur) the City Council is presided by Stadtprasident Alexander Tschappat. Departmental tasks, coordination measures and implementation of laws decreed by the City Parliament are carried by the City Council. The regular election of the City Council by any inhabitant valid to vote is held every four years. Any resident of Bern allowed to vote can be elected as a member of the City Council. The delegates are selected by means of a system of Majorz. The mayor is elected as such as well by public election while the heads of the other directorates are assigned by the collegiate. The executive body holds its meetings in the Erlacherhof, built by architect Albrecht Sturler after 1747.
Question: How does the government of Bern operate?

Output:
as a collegiate authority.