Here is a question about this article: IBM started working on a prototype system loosely based on Codd's concepts as System R in the early 1970s. The first version was ready in 1974/5, and work then started on multi-table systems in which the data could be split so that all of the data for a record (some of which is optional) did not have to be stored in a single large "chunk". Subsequent multi-user versions were tested by customers in 1978 and 1979, by which time a standardized query language – SQL[citation needed] – had been added. Codd's ideas were establishing themselves as both workable and superior to CODASYL, pushing IBM to develop a true production version of System R, known as SQL/DS, and, later, Database 2 (DB2).
What is the answer to this question: When customers first tested IBM's system, what computer language had been added? 
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So... SQL


Here is a question about this article: Advances were made in irrigation and farming, using new technology such as the windmill. Crops such as almonds and citrus fruit were brought to Europe through al-Andalus, and sugar cultivation was gradually adopted by the Europeans. Arab merchants dominated trade in the Indian Ocean until the arrival of the Portuguese in the 16th century. Hormuz was an important center for this trade. There was also a dense network of trade routes in the Mediterranean, along which Muslim countries traded with each other and with European powers such as Venice, Genoa and Catalonia. The Silk Road crossing Central Asia passed through Muslim states between China and Europe.
What is the answer to this question: Where was an important center of Indian Ocean trading in the 16th century?
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So... Hormuz


Here is a question about this article: In the aftermath, all power was transferred from the East India Company to the British Crown, which began to administer most of India as a number of provinces. The Crown controlled the Company's lands directly and had considerable indirect influence over the rest of India, which consisted of the Princely states ruled by local royal families. There were officially 565 princely states in 1947, but only 21 had actual state governments, and only three were large (Mysore, Hyderabad and Kashmir). They were absorbed into the independent nation in 1947–48.
What is the answer to this question: How did Britain govern the vast area of India?
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So...
provinces