Here is a question about this article: Madonna released her eleventh studio album, Hard Candy, in April 2008. Containing R&B and urban pop influences, the songs on Hard Candy were autobiographical in nature and saw Madonna collaborating with Justin Timberlake, Timbaland, Pharrell Williams and Nate "Danja" Hills. The album debuted at number one in thirty seven countries and on the Billboard 200. Don Shewey from Rolling Stone complimented it as an "impressive taste of her upcoming tour." It received generally positive reviews worldwide though some critics panned it as "an attempt to harness the urban market".
What is the answer to this question: When was Hard Candy released?
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So... April 2008

Here is a question about this article: In the Middle Ages, several powerful Somali empires dominated the regional trade including the Ajuran Sultanate, which excelled in hydraulic engineering and fortress building, the Sultanate of Adal, whose general Ahmad ibn Ibrahim al-Ghazi (Ahmed Gurey) was the first commander to use cannon warfare on the continent during Adal's conquest of the Ethiopian Empire, and the Sultanate of the Geledi, whose military dominance forced governors of the Omani empire north of the city of Lamu to pay tribute to the Somali Sultan Ahmed Yusuf.
What is the answer to this question: What state employed Abmad ibn Ibrahim al-Ghazi?
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So... the Sultanate of Adal

Here is a question about this article: The Union Internationale des Associations d'Alpinisme (UIAA) has defined a list of 82 "official" Alpine summits that reach at least 4,000 m (13,123 ft). The list includes not only mountains, but also subpeaks with little prominence that are considered important mountaineering objectives. Below are listed the 22 "four-thousanders" with at least 500 m (1,640 ft) of prominence.
What is the answer to this question: The list of twenty two summits has summits with at least how much prominence?
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So...
500 m (1,640 ft)