Problem: The Cathedral of Brasília in the capital of the Federative Republic of Brazil, is an expression of the architect Oscar Niemeyer. This concrete-framed hyperboloid structure, seems with its glass roof reaching up, open, to the heavens. On 31 May 1970, the Cathedral’s structure was finished, and only the 70 m (229.66 ft) diameter of the circular area were visible. Niemeyer's project of Cathedral of Brasília is based in the hyperboloid of revolution which sections are asymmetric. The hyperboloid structure itself is a result of 16 identical assembled concrete columns. These columns, having hyperbolic section and weighing 90 t, represent two hands moving upwards to heaven. The Cathedral was dedicated on 31 May 1970.
What type of structure is the Cathedral of Brasília?
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Answer: concrete-framed hyperboloid


Problem: According to recent estimates, 50% of the population adheres to Christianity, Islam 48%, while 2% of the population follows other religions including traditional African religion and animism. According to a study made by Pew Research Center, 63% adheres to Christianity and 36% adheres to Islam. Since May 2002, the government of Eritrea has officially recognized the Eritrean Orthodox Tewahedo Church (Oriental Orthodox), Sunni Islam, the Eritrean Catholic Church (a Metropolitanate sui juris) and the Evangelical Lutheran church. All other faiths and denominations are required to undergo a registration process. Among other things, the government's registration system requires religious groups to submit personal information on their membership to be allowed to worship.
When did the Eritrean government begin to officially recognize certain churches?
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Answer: May 2002


Problem: After the downfall of the prior Gupta Empire in the middle of the 6th century, North India reverted to small republics and small monarchical states ruled by Gupta rulers. Harsha was a convert to Buddhism. He united the small republics from Punjab to central India, and their representatives crowned Harsha king at an assembly in April 606 giving him the title of Maharaja when he was merely 16 years old. Harsha belonged to Kanojia. He brought all of northern India under his control. The peace and prosperity that prevailed made his court a center of cosmopolitanism, attracting scholars, artists and religious visitors from far and wide. The Chinese traveler Xuan Zang visited the court of Harsha and wrote a very favorable account of him, praising his justice and generosity.
When was Harsha crowned by the states he united?
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Answer:
April 606